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crypt: Add --crypt-show-mapping to show encrypted file mapping

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Fixes #1004
This commit is contained in:
Nick Craig-Wood 2017-01-29 10:12:52 +00:00
parent 20c033b484
commit 390f3cf35b
2 changed files with 29 additions and 2 deletions
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16
crypt/crypt.go
View File

@ -12,6 +12,12 @@ import (
"github.com/pkg/errors"
)
// Globals
var (
// Flags
cryptShowMapping = fs.BoolP("crypt-show-mapping", "", false, "For all files listed show how the names encrypt.")
)
// Register with Fs
func init() {
fs.Register(&fs.RegInfo{
@ -485,11 +491,14 @@ func (lo *ListOpts) Level() int {
// Multiple goroutines can safely add objects concurrently.
func (lo *ListOpts) Add(obj fs.Object) (abort bool) {
remote := obj.Remote()
_, err := lo.f.cipher.DecryptFileName(remote)
decryptedRemote, err := lo.f.cipher.DecryptFileName(remote)
if err != nil {
fs.Debug(remote, "Skipping undecryptable file name: %v", err)
return lo.ListOpts.IsFinished()
}
if *cryptShowMapping {
fs.Log(decryptedRemote, "Encrypts to %q", remote)
}
return lo.ListOpts.Add(lo.f.newObject(obj))
}
@ -498,11 +507,14 @@ func (lo *ListOpts) Add(obj fs.Object) (abort bool) {
// Multiple goroutines can safely add objects concurrently.
func (lo *ListOpts) AddDir(dir *fs.Dir) (abort bool) {
remote := dir.Name
_, err := lo.f.cipher.DecryptDirName(remote)
decryptedRemote, err := lo.f.cipher.DecryptDirName(remote)
if err != nil {
fs.Debug(remote, "Skipping undecryptable dir name: %v", err)
return lo.ListOpts.IsFinished()
}
if *cryptShowMapping {
fs.Log(decryptedRemote, "Encrypts to %q", remote)
}
return lo.ListOpts.AddDir(lo.f.newDir(dir))
}

15
docs/content/crypt.md
View File

@ -236,6 +236,21 @@ depends on that.
Hashes are not stored for crypt. However the data integrity is
protected by an extremely strong crypto authenticator.
### Specific options ###
Here are the command line options specific to this cloud storage
system.
#### --crypt-show-mapping ####
If this flag is set then for each file that the remote is asked to
list, it will log (at level INFO) a line stating the decrypted file
name and the encrypted file name.
This is so you can work out which encrypted names are which decrypted
names just in case you need to do something with the encrypted file
names, or for debugging purposes.
## File formats ##
### File encryption ###