in order to create a 1:1 copy of a file if a version gets created
we need to store this information on copyBetweenStorage(). This
allows us to by-pass the encryption wrapper if we read the source file.
The code path called when using external storage with WebDAV is using `\OC\Files\Storage\Wrapper\Encryption::getMetaData` which did not contain the actual encrypted version inside the cache entry version. This lead to the following:
1. User uploaded a file
2. File is created and `\OC\Files\Storage\Wrapper\Encryption::getMetaData` is called. It has an empty `encryptedVersion` but sets `encrypted` to either `true` or `false`.
3. The call when updating the file cache will use the old version.
In case of a move operation from an unencrypted to an encrypted
storage the old encrypted version would stay with "0" while the
correct value would be "1". Thus we manually set the value to "1"
for those cases.
See also https://github.com/owncloud/core/issues/23078
In the case of shared files, we have to call free_space() on the file
name. This has the side-effect that when uploading to a local storage
without quota set, it will call disk_free_space with the file name,
which fails.
This fix uses the parent folder in case the given path is a file.
When calling `\OC\Files\View::copy` we should also keep the version to ensure that the file will always have the correct version attached and can be successfully decrypted.
To test this the following steps are necessary (from https://github.com/owncloud/core/issues/22781#issuecomment-191328982):
1. setup a new ownCloud 9.0 beta2
2. enable encryption
2. upload a docx (5.7MB large)
3. upload the same file again and overwrite the existing file
4. I can download the original file and the first version
5. I restore the first version
6. restored version can no longer be downloaded with the error described above
The manual cache operation in `\OCA\Files_Versions\Storage` is unfortunately necessary since `\OCA\Files_Versions\Storage::copyFileContents` is not using `\OCP\Files\Storage::moveFromStorage` in the case when an object storage is used. Due to the workaround added in 54cea05271 the stream is directly copied and thus bypassing the FS.
This check will skip the background scan for the root storage
because there is nothing in the root storage that isn't already
in another (mostly user-) storage.
Fixes#22501
Some move operations when cross-storage will be replaced by copy and
delete. Before attempting this, first check whether the source storage
has delete permissions.
This also prevents renaming system-wide external storages.
Fixes#22467
This can go wrong when an app (take the ldap app) DIs something that
needs the rootFolder. This break if we use cookie auth since then we
know the user at that point and thus try to setup the fs for that user.
However if there are then incomming shares from an ldap user they will
fails since the user manager can't find them yet.
Now getRootFolder does not setup the fs for any user.
When overwriting shared files as recipient, the part file is written on
the uploader's storage before overwriting the target file.
If the uploader has no quota left, they should still be able to
overwrite that file with Webdav. To make this work, they need to be able
to write the part file to their own storage first.
Stefan Weil
Morris Jobke
Bjoern Schiessle
Frank Karlitschek
Lukas Reschke
Thomas Müller
Jörn Friedrich Dreyer
Joas Schilling
Robin Appelman
Vincent Petry
Scrutinizer Auto-Fixer
Roeland Jago Douma