func packIDTester(repo *repository.Repository, inChan <-chan backend.ID, errChan chan<- error, wg *sync.WaitGroup, done <-chan struct{}) {
debug.Log("Checker.testPackID", "worker start")
defer debug.Log("Checker.testPackID", "worker done")
defer wg.Done()
for id := range inChan {
ok, err := repo.Backend().Test(backend.Data, id.String())
if err != nil {
err = PackError{ID: id, Err: err}
} else {
if !ok {
err = PackError{ID: id, Err: errors.New("does not exist")}
}
}
if err != nil {
debug.Log("Checker.testPackID", "error checking for pack %s: %v", id.Str(), err)
select {
case <-done:
return
case errChan <- err:
}
continue
}
debug.Log("Checker.testPackID", "pack %s exists", id.Str())
}
}
func printPacks(repo *repository.Repository, wr io.Writer) error {
done := make(chan struct{})
defer close(done)
f := func(job worker.Job, done <-chan struct{}) (interface{}, error) {
name := job.Data.(string)
h := backend.Handle{Type: backend.Data, Name: name}
rd := backend.NewReadSeeker(repo.Backend(), h)
unpacker, err := pack.NewUnpacker(repo.Key(), rd)
if err != nil {
return nil, err
}
return unpacker.Entries, nil
}
jobCh := make(chan worker.Job)
resCh := make(chan worker.Job)
wp := worker.New(dumpPackWorkers, f, jobCh, resCh)
go func() {
for name := range repo.Backend().List(backend.Data, done) {
jobCh <- worker.Job{Data: name}
}
close(jobCh)
}()
for job := range resCh {
name := job.Data.(string)
if job.Error != nil {
fmt.Fprintf(os.Stderr, "error for pack %v: %v\n", name, job.Error)
continue
}
entries := job.Result.([]pack.Blob)
p := Pack{
Name: name,
Blobs: make([]Blob, len(entries)),
}
for i, blob := range entries {
p.Blobs[i] = Blob{
Type: blob.Type,
Length: blob.Length,
ID: blob.ID,
Offset: blob.Offset,
}
}
prettyPrintJSON(os.Stdout, p)
}
wp.Wait()
return nil
}
// FindSnapshot takes a string and tries to find a snapshot whose ID matches
// the string as closely as possible.
func FindSnapshot(repo *repository.Repository, s string) (backend.ID, error) {
// find snapshot id with prefix
name, err := backend.Find(repo.Backend(), backend.Snapshot, s)
if err != nil {
return backend.ID{}, err
}
return backend.ParseID(name)
}
func TeardownRepo(repo *repository.Repository) {
if !TestCleanupTempDirs {
l := repo.Backend().(*local.Local)
fmt.Printf("leaving local backend at %s\n", l.Location())
return
}
err := repo.Delete()
if err != nil {
panic(err)
}
}
func deleteKey(repo *repository.Repository, name string) error {
if name == repo.KeyName() {
return errors.Fatal("refusing to remove key currently used to access repository")
}
err := repo.Backend().Remove(restic.KeyFile, name)
if err != nil {
return err
}
Verbosef("removed key %v\n", name)
return nil
}
func (cmd CmdKey) deleteKey(repo *repository.Repository, name string) error {
if name == repo.KeyName() {
return errors.New("refusing to remove key currently used to access repository")
}
err := repo.Backend().Remove(backend.Key, name)
if err != nil {
return err
}
cmd.global.Verbosef("removed key %v\n", name)
return nil
}
// RemoveStaleLocks deletes all locks detected as stale from the repository.
func RemoveStaleLocks(repo *repository.Repository) error {
return eachLock(repo, func(id backend.ID, lock *Lock, err error) error {
// ignore locks that cannot be loaded
if err != nil {
return nil
}
if lock.Stale() {
return repo.Backend().Remove(backend.Lock, id.String())
}
return nil
})
}
func (cmd CmdKey) changePassword(repo *repository.Repository) error {
id, err := repository.AddKey(repo, cmd.getNewPassword(), repo.Key())
if err != nil {
return fmt.Errorf("creating new key failed: %v\n", err)
}
err = repo.Backend().Remove(backend.Key, repo.KeyName())
if err != nil {
return err
}
cmd.global.Verbosef("saved new key as %s\n", id)
return nil
}
// checkPack reads a pack and checks the integrity of all blobs.
func checkPack(r *repository.Repository, id backend.ID) error {
debug.Log("Checker.checkPack", "checking pack %v", id.Str())
h := backend.Handle{Type: backend.Data, Name: id.String()}
buf, err := backend.LoadAll(r.Backend(), h, nil)
if err != nil {
return err
}
hash := backend.Hash(buf)
if !hash.Equal(id) {
debug.Log("Checker.checkPack", "Pack ID does not match, want %v, got %v", id.Str(), hash.Str())
return fmt.Errorf("Pack ID does not match, want %v, got %v", id.Str(), hash.Str())
}
unpacker, err := pack.NewUnpacker(r.Key(), bytes.NewReader(buf))
if err != nil {
return err
}
var errs []error
for i, blob := range unpacker.Entries {
debug.Log("Checker.checkPack", " check blob %d: %v", i, blob.ID.Str())
plainBuf := make([]byte, blob.Length)
plainBuf, err = crypto.Decrypt(r.Key(), plainBuf, buf[blob.Offset:blob.Offset+blob.Length])
if err != nil {
debug.Log("Checker.checkPack", " error decrypting blob %v: %v", blob.ID.Str(), err)
errs = append(errs, fmt.Errorf("blob %v: %v", i, err))
continue
}
hash := backend.Hash(plainBuf)
if !hash.Equal(blob.ID) {
debug.Log("Checker.checkPack", " Blob ID does not match, want %v, got %v", blob.ID.Str(), hash.Str())
errs = append(errs, fmt.Errorf("Blob ID does not match, want %v, got %v", blob.ID.Str(), hash.Str()))
continue
}
}
if len(errs) > 0 {
return fmt.Errorf("pack %v contains %v errors: %v", id.Str(), len(errs), errs)
}
return nil
}
// loadSnapshotTreeIDs loads all snapshots from backend and returns the tree IDs.
func loadSnapshotTreeIDs(repo *repository.Repository) (backend.IDs, []error) {
var trees struct {
IDs backend.IDs
sync.Mutex
}
var errs struct {
errs []error
sync.Mutex
}
snapshotWorker := func(strID string, done <-chan struct{}) error {
id, err := backend.ParseID(strID)
if err != nil {
return err
}
debug.Log("Checker.Snaphots", "load snapshot %v", id.Str())
treeID, err := loadTreeFromSnapshot(repo, id)
if err != nil {
errs.Lock()
errs.errs = append(errs.errs, err)
errs.Unlock()
return nil
}
debug.Log("Checker.Snaphots", "snapshot %v has tree %v", id.Str(), treeID.Str())
trees.Lock()
trees.IDs = append(trees.IDs, treeID)
trees.Unlock()
return nil
}
err := repository.FilesInParallel(repo.Backend(), backend.Snapshot, defaultParallelism, snapshotWorker)
if err != nil {
errs.errs = append(errs.errs, err)
}
return trees.IDs, errs.errs
}
func changePassword(gopts GlobalOptions, repo *repository.Repository) error {
pw, err := getNewPassword(gopts)
if err != nil {
return err
}
id, err := repository.AddKey(repo, pw, repo.Key())
if err != nil {
return errors.Fatalf("creating new key failed: %v\n", err)
}
err = repo.Backend().Remove(restic.KeyFile, repo.KeyName())
if err != nil {
return err
}
Verbosef("saved new key as %s\n", id)
return nil
}
// Clear removes information from the cache that isn't present in the repository any more.
func (c *Cache) Clear(repo *repository.Repository) error {
list, err := c.list(backend.Snapshot)
if err != nil {
return err
}
for _, entry := range list {
debug.Log("Cache.Clear", "found entry %v", entry)
if ok, err := repo.Backend().Test(backend.Snapshot, entry.ID.String()); !ok || err != nil {
debug.Log("Cache.Clear", "snapshot %v doesn't exist any more, removing %v", entry.ID, entry)
err = c.purge(backend.Snapshot, entry.Subtype, entry.ID)
if err != nil {
return err
}
}
}
return nil
}
// RemoveAllLocks removes all locks forcefully.
func RemoveAllLocks(repo *repository.Repository) error {
return eachLock(repo, func(id backend.ID, lock *Lock, err error) error {
return repo.Backend().Remove(backend.Lock, id.String())
})
}
func lockExists(repo *repository.Repository, t testing.TB, id backend.ID) bool {
exists, err := repo.Backend().Test(backend.Lock, id.String())
OK(t, err)
return exists
}
func removeLock(repo *repository.Repository, id backend.ID) error {
return repo.Backend().Remove(backend.Lock, id.String())
}