"Cannot upload null" with end-to-end encryption enabled

[rugk]

Actual behaviour

This notification is shown:

And this is how it is shown in the recent uploads:

Expected behaviour

Upload file.

Steps to reproduce

1. Setup e2e encryption on Android in the exact same app.
2. (Tried to) upload something in the dir in Nextcloud Desktop 2.5.0 on Fedora 29.
3. Access dir in Android app. It shows no files… 😕
4. Now try to upload a small <500kB file.

Environment data

Android version: LineageOS 14.1

Stock or customized system: custom

Nextcloud app version: 3.3.2 (F-Droid)

Nextcloud server version: 14

Logs

Web server error log

I checked when the error occurred, no error logged here.

Nextcloud log (data/nextcloud.log)

I checked when the error occurred, nothing special in there.

[nextcloud-android-bot]

GitMate.io thinks possibly related issues are #1599 (End to end encryption - overview), #1863 (Beta end-to-end encryption missing), #2388 (Andoird end-to-end encryption having issues after upgrade), #2309 (E2E encryption : not able to re-enable a folder as E2E encrypted), and #2691 (Instant Upload not syncing after re-enabling it).

[rugk]

On the desktop it also does not work, BTW: nextcloud/desktop#890

[rugk]

Any news here what I can do to troubleshoot/debug this, or is this "expected"??

[tobiasKaminsky]

It seems that somehow the setup of encryption keys failed and thus "null" is used.
Can you try it with a complete new test user?

[rugk]

Did so and it worked with a completely new user for some reason…

I directly uploaded a file after setting it up on Android. maybe that was the big difference… 🤔
And I've only connected the broken desktop e2e setup (nextcloud/desktop#560) after I've set it up on Android. 🤔

[rugk]

Okay, on the desktop client syncing a 30kB file seems to have worked, but a 80kB file failed:

here is some client-side log:

[OCC::WebFlowCredentials::slotFinished 	request finished
[OCC::WebFlowCredentials::stillValid 	Still valid?
[OCC::WebFlowCredentials::stillValid 	QNetworkReply::NetworkError(NoError)
[OCC::WebFlowCredentials::stillValid 	"Unknown error"
[OCC::GetFolderEncryptStatusJob::finished 	GetFolderEncryptStatus of QUrl("https://server.url:1111/subDir/remote.php/webdav") finished with status QNetworkReply::NetworkError(NoError) ""
[OCC::SocketApi::slotReadSocket 	Received SocketAPI message <-- "RETRIEVE_FILE_STATUS:/local/path/to/e2e/dir.43b76200f31043bd880519b2b523a1a6.~53bf0994" from QLocalSocket(0x556ccaeb9e60)
[OCC::SocketListener::sendMessage 	Sending SocketAPI message --> "STATUS:IGNORE:/local/path/to/e2e/dir.43b76200f31043bd880519b2b523a1a6.~53bf0994" to QLocalSocket(0x556ccaeb9e60)
[OCC::SocketApi::slotReadSocket 	Received SocketAPI message <-- "GET_MENU_ITEMS:" from QLocalSocket(0x556ccaeb9e60)
[OCC::SocketListener::sendMessage 	Sending SocketAPI message --> "GET_MENU_ITEMS:BEGIN" to QLocalSocket(0x556ccaeb9e60)
[OCC::SocketListener::sendMessage 	Sending SocketAPI message --> "GET_MENU_ITEMS:END" to QLocalSocket(0x556ccaeb9e60)
[OCC::WebFlowCredentials::slotFinished 	request finished
[OCC::AbstractNetworkJob::slotFinished 	QNetworkReply::NetworkError(UnknownContentError) "Error transferring https://server.url:1111/subDir/remote.php/dav/files/userName/dir/43b76200f31043bd880519b2b523a1a6 - server replied: " QVariant(int, 423)
[OCC::WebFlowCredentials::stillValid 	Still valid?
[OCC::WebFlowCredentials::stillValid 	QNetworkReply::NetworkError(UnknownContentError)
[OCC::WebFlowCredentials::stillValid 	"Error transferring https://server.url:1111/subDir/remote.php/dav/files/userName/dir/43b76200f31043bd880519b2b523a1a6 - server replied: "
[OCC::SyncJournalDb::setErrorBlacklistEntry 	Setting blacklist entry for  "dir/43b76200f31043bd880519b2b523a1a6" 6 "Error transferring https://server.url:1111/subDir/remote.php/dav/files/userName/dir/43b76200f31043bd880519b2b523a1a6 - server replied: " 1544277907 0 1541430936 "71c60dcb32c26d54d6d997458b226c56" "" 0
[OCC::blacklistUpdate 	escalating soft error on  "dir/43b76200f31043bd880519b2b523a1a6"  to normal error,  423
[OCC::PropagateItemJob::done 	Could not complete propagation of "dir/43b76200f31043bd880519b2b523a1a6" by OCC::PropagateDownloadFile(0x556ccbb1a0d0) with status 2 and error: "Error transferring https://server.url:1111/subDir/remote.php/dav/files/userName/dir/43b76200f31043bd880519b2b523a1a6 - server replied: "
[OCC::SocketListener::sendMessage 	Sending SocketAPI message --> "STATUS:ERROR:/local/path/to/e2e/dir43b76200f31043bd880519b2b523a1a6" to QLocalSocket(0x556ccaeb9e60)
[OCC::ActivityWidget::slotItemCompleted 	Item  "dir/43b76200f31043bd880519b2b523a1a6"  retrieved resulted in  "Error transferring https://server.url:1111/subDir/remote.php/dav/files/userName/dir/43b76200f31043bd880519b2b523a1a6 - server replied: "
[OCC::ActivityWidget::slotItemCompleted 	Item  "dir/43b76200f31043bd880519b2b523a1a6"  retrieved resulted in error  "Error transferring https://server.url:1111/subDir/remote.php/dav/files/userName/dir/43b76200f31043bd880519b2b523a1a6 - server replied: "
[OCC::ActivityListModel::addErrorToActivityList 	Error successfully added to the notification list:  "Error transferring https://server.url:1111/subDir/remote.php/dav/files/userName/dir/43b76200f31043bd880519b2b523a1a6 - server replied: "
[OCC::SocketApi::slotReadSocket 	Received SocketAPI message <-- "GET_MENU_ITEMS:" from QLocalSocket(0x556ccaeb9e60)
[OCC::SocketListener::sendMessage 	Sending SocketAPI message --> "GET_MENU_ITEMS:BEGIN" to QLocalSocket(0x556ccaeb9e60)
[OCC::SocketListener::sendMessage 	Sending SocketAPI message --> "GET_MENU_ITEMS:END" to QLocalSocket(0x556ccaeb9e60)
[OCC::WebFlowCredentials::slotFinished 	request finished
[OCC::WebFlowCredentials::stillValid 	Still valid?
[OCC::WebFlowCredentials::stillValid 	QNetworkReply::NetworkError(NoError)
[OCC::WebFlowCredentials::stillValid 	"Unknown error"
[OCC::LsColJob::finished 	LSCOL of QUrl("https://server.url:1111/subDir/remote.php/dav/files/rugk/") FINISHED WITH STATUS "OK"
[OCC::WebFlowCredentials::slotFinished 	request finished
[OCC::WebFlowCredentials::stillValid 	Still valid?
[OCC::WebFlowCredentials::stillValid 	QNetworkReply::NetworkError(NoError)
[OCC::WebFlowCredentials::stillValid 	"Unknown error"
[OCC::PropfindJob::finished 	PROPFIND of QUrl("https://server.url:1111/subDir/remote.php/dav/files/userName/") FINISHED WITH STATUS "OK"
[OCC::WebFlowCredentials::slotFinished 	request finished
[OCC::WebFlowCredentials::stillValid 	Still valid?
[OCC::WebFlowCredentials::stillValid 	QNetworkReply::NetworkError(NoError)
[OCC::WebFlowCredentials::stillValid 	"Unknown error"
[OCC::GetFolderEncryptStatusJob::finished 	GetFolderEncryptStatus of QUrl("https://server.url:1111/subDir/remote.php/webdav") finished with status QNetworkReply::NetworkError(NoError) ""
[OCC::WebFlowCredentials::slotFinished 	request finished
[OCC::WebFlowCredentials::stillValid 	Still valid?
[OCC::WebFlowCredentials::stillValid 	QNetworkReply::NetworkError(NoError)
[OCC::WebFlowCredentials::stillValid 	"Unknown error"
[OCC::LsColJob::finished 	LSCOL of QUrl("https://server.url:1111/subDir/remote.php/dav/files/userName/") FINISHED WITH STATUS "OK"
[OCC::WebFlowCredentials::slotFinished 	request finished
[OCC::AbstractNetworkJob::slotFinished 	QNetworkReply::NetworkError(ContentAccessDenied) "Error transferring https://server.url:1111/subDir/ocs/v2.php/apps/end_to_end_encryption/api/v1/lock/124927?format=json - server replied: " QVariant(int, 403)
[OCC::WebFlowCredentials::stillValid 	Still valid?
[OCC::WebFlowCredentials::stillValid 	QNetworkReply::NetworkError(ContentAccessDenied)
[OCC::WebFlowCredentials::stillValid 	"Error transferring https://server.url:1111/subDir/ocs/v2.php/apps/end_to_end_encryption/api/v1/lock/124927?format=json - server replied: "
[OCC::LockEncryptFolderApiJob::finished 	error locking file "ocs/v2.php/apps/end_to_end_encryption/api/v1/lock/124927" "Error transferring https://server.url:1111/subDir/ocs/v2.php/apps/end_to_end_encryption/api/v1/lock/124927?format=json - server replied: " 403
[OCC::AccessManager::createRequest 	6 "PROPFIND" "https://server.url:1111/subDir/remote.php/dav/files/rugk/" has X-Request-ID "573817b5-c89f-4432-98ab-6ce37cfeefbb"
[OCC::AbstractNetworkJob::start 	OCC::PropfindJob created for "https://server.url/nextcloud" + "/" "OCC::ConnectionValidator"
[OCC::AccessManager::createRequest 	6 "PROPFIND" "https://server.url:1111/subDir/remote.php/dav/files/userName/" has X-Request-ID "641758e5-7d00-4890-863a-b0329ab901d9"
[OCC::AbstractNetworkJob::start 	OCC::PropfindJob created for "https://server.url/nextcloud" + "/" "OCC::ConnectionValidator"
[OCC::WebFlowCredentials::slotFinished 	request finished
[OCC::WebFlowCredentials::stillValid 	Still valid?
[OCC::WebFlowCredentials::stillValid 	QNetworkReply::NetworkError(NoError)
[OCC::WebFlowCredentials::stillValid 	"Unknown error"
[OCC::PropfindJob::finished 	PROPFIND of QUrl("https://server.url:1111/subDir/remote.php/dav/files/userName/") FINISHED WITH STATUS "OK"
[OCC::WebFlowCredentials::slotFinished 	request finished
[OCC::WebFlowCredentials::stillValid 	Still valid?
[OCC::WebFlowCredentials::stillValid 	QNetworkReply::NetworkError(NoError)
[OCC::WebFlowCredentials::stillValid 	"Unknown error"
[OCC::PropfindJob::finished 	PROPFIND of QUrl("https://server.url:1111/subDir/remote.php/dav/files/rugk/") FINISHED WITH STATUS "OK"
[OCC::AccessManager::createRequest 	6 "PROPFIND" "https://server.url:1111/subDir/remote.php/dav/files/userName/" has X-Request-ID "7adaf089-42cb-430d-9d49-e55cb1b69b4f"
[OCC::AbstractNetworkJob::start 	OCC::PropfindJob created for "https://server.url/nextcloud" + "/" "OCC::QuotaInfo"
[OCC::WebFlowCredentials::slotFinished 	request finished
[OCC::WebFlowCredentials::stillValid 	Still valid?
[OCC::WebFlowCredentials::stillValid 	QNetworkReply::NetworkError(NoError)
[OCC::WebFlowCredentials::stillValid 	"Unknown error"
[OCC::PropfindJob::finished 	PROPFIND of QUrl("https://server.url:1111/subDir/remote.php/dav/files/userName/") FINISHED WITH STATUS "OK"

[rugk]

Also got this on the server, but this may be related to the fact that I added a new client and just had to enter the e2e password(?):

[rugk]

Also this was once shown on a client (note this is really the new user!):

translation: …cannot be downloaded, because there are no encryption information.

[spackmat]

Exact the same problems here. Today I created a complete new user (with a username never used before) to be sure that my old user isn't the problem.

To reproduce the problem, I do following steps:

1. Create a new folder in the Android App and set is as encrypted
2. Upload a file, see it works
3. Delete the file, see it works
4. Upload the file again, still works
5. Sync with Desktop Client, see and check the file, yay, seems to work, but:
6. Try to delete the file in Andoid client: Server not reachable.
7. Try to delete the file on Desktop: Works sometimes, sometimes provokes only sync errors
8. Try to upload another file in that folder in Android App: Fails with unknown error or folder error (Ordnerfehler)
9. Try to upload/sync any new file from Desktop App leads to several different errors, but never seen a working file reaching the Android App.
10. Removing encryption in Android App works, then deleting the folder in the Webapp, too (but not from Android App).
11. Start at 1. and repeat several times.

So when the Android App works alone, it works. When I sync with the Desktop App only once, the new folder is messed up and nothing works anymore in that folder.

Edit: Andoid App is 3.5.0 and Windows Desktop App is 2.5.1. Both also never worked in previous versions. Tried from the first beta onwards: Since the Desktop client has E2EE, the above happens.

[stale]

This request did not receive an update in the last 4 weeks. Please take a look again and update the issue with new details, otherwise the issue will be automatically closed in 2 weeks. Thank you!

[spackmat]

I'm pretty sure this is a problem of the desktop software, since the Android client works fine alone. There are several open issues over there, so I think this one here can be closed.

Yesterday I tried everything again with a completely new (hosted) Nextcloud-15-instance with new users and the current client versions and could reproduce the steps above: When the desktop client comes in, the encrypted folder is messed up and stops working at all.