hardcoresushi/libgocryptfs
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19 Commits

Author SHA1 Message Date
Sebastian Lackner
874eaf9734 Assorted spelling fixes. 
Mostly detected with the 'codespell' utility, but also includes some
manual grammar fixes.
 2018-12-27 15:19:55 +01:00
Sebastian Lackner
c547673529 nametransform: Return error if decrypted name is '.' or '..' 2017-11-22 23:42:08 +01:00
Jakob Unterwurzacher
5190cc09bb nametransform: move diriv cache into it's own package 
Needs some space to grow.

renamed:    internal/nametransform/diriv_cache.go -> internal/nametransform/dirivcache/dirivcache.go
 2017-08-06 21:59:15 +02:00
Jakob Unterwurzacher
e827763f2e nametransform: harden name decryption against invalid input 
This fixes a few issues I have found reviewing the code:

1) Limit the amount of data ReadLongName() will read. Previously,
you could send gocryptfs into out-of-memory by symlinking
gocryptfs.diriv to /dev/zero.

2) Handle the empty input case in unPad16() by returning an
error. Previously, it would panic with an out-of-bounds array
read. It is unclear to me if this could actually be triggered.

3) Reject empty names after base64-decoding in DecryptName().
An empty name crashes emeCipher.Decrypt().
It is unclear to me if B64.DecodeString() can actually return
a non-error empty result, but let's guard against it anyway.
 2017-05-23 21:26:38 +02:00
Jakob Unterwurzacher
26881538e1 nametranform, fusefrontend: better errors on invalid names 
nametransform.DecryptName() now always returns syscall.EBADMSG if
the name was invalid.

fusefrontend.OpenDir error messages have been normalized.
 2017-05-07 20:58:27 +02:00
Jakob Unterwurzacher
445b5019e3 nametransform: fix Raw64 not affecting symlink targets 
The symlink functions incorrectly hardcoded the padded
base64 variant.
 2017-03-05 22:59:25 +01:00
Jakob Unterwurzacher
966308eeb7 Drop Go 1.4 compatability code everywhere 
Yields a nice reduction in code size.
 2017-03-05 17:44:14 +01:00
Jakob Unterwurzacher
e032539e2c cryptocore: use eme v1.1 interface 
Version 1.1 of the EME package (github.com/rfjakob/eme) added
a more convenient interface. Use it.

Note that you have to upgrade your EME package (go get -u)!
 2017-03-05 13:58:24 +01:00
Jakob Unterwurzacher
d15122d3d6 Add Go 1.4 compatibility layer for raw64 
Using raw64 will not work, but at least it will compile.
 2016-11-01 19:25:59 +01:00
Jakob Unterwurzacher
2b991c9743 Add support for unpadded base64 filenames, "-raw64" 
Through base64.RawURLEncoding.

New command-line parameter "-raw64".
 2016-11-01 18:43:22 +01:00
Valient Gough
b764917cd5 lint fixes 2016-10-04 23:18:33 +02:00
Jakob Unterwurzacher
28838a489d nametransform: downgrade invalid length warning 
This happens all the time in reverse mode when somebody stats
an encrypted symlink target.
 2016-09-25 19:50:16 +02:00
Jakob Unterwurzacher
c7b3150afc nametransform: delete unused function DecryptPathDirIV 2016-09-25 18:56:23 +02:00
Jakob Unterwurzacher
b883dd10a6 reverse: add symlink encryption and Readlink support 2016-09-25 18:01:24 +02:00
Jakob Unterwurzacher
01c18dbcab nametransform: return EINVAL on invalid padding 
With the generic fmt.Errorf we trigger a warning from go-fuse:

  2016/09/21 21:42:31 can't convert error type: Invalid padding
 2016-09-25 16:43:17 +02:00
Jakob Unterwurzacher
e8a234f658 Add godoc comments to all internal packages 2016-07-06 21:51:25 +02:00
Jakob Unterwurzacher
e574a6cc1f nametransform: hide detailed padding error behind the debug flag 
unPad16 returns detailed errors including the position of the
incorrect bytes. Kill a possible padding oracle by lumping
everything into a generic error.

The detailed error is only logged if debug is active.
 2016-07-03 15:35:58 +02:00
Jakob Unterwurzacher
3d59a72ba9 Drop deprecated "-emenames" option 
The EMENames feature flag is already mandatory, dropping the command
line option is the final step.
 2016-06-23 21:56:50 +02:00
Jakob Unterwurzacher
7e92ebe16a Rename nametransform, contentenc source files 
Let's have shorter names, and merge *_api.go into the "main"
file.

No code changes.
 2016-06-16 19:02:47 +02:00