Some device manufacturers (I'm looking at you Xiaomi!) made some changes
to Android that break content providers and other background apps. This
affects a few apps, including DAVdroid from which EteSync is derived.
This change attempts to automatically detect such devices, alert users
and point them to the relevant FAQ entry.
I've already had to deal with a few bug reports stemming from this
issue, so it's good to have this handled automatically.
This addresses #22
Groups are saved as separate vCards. We removed support for groups to
speed up development and deferred adding them back until there was
demand.
There is demand now, and also, not having this support resulted in the
sync not working, not just groups not supported.
Many thanks to "359" (this user's preferred alias) for investigating and
reporting this issue.
Due to a logical issue in the code, new journal entries were added to the
local cache after they've been created locally, and not after they've
been added to the server. Under normal circumstances this doesn't pose a
problem, however when pushing to the server fails, the local cache
would have the new entries as if they were saved on the server, causing
the app to think there has been a corruption on the server (as entries
should never be removed from the server) and halt the sync.
This change makes it so the entries are saved to the local cache only
after they've been saved on the server.
Note: this was not spotted until now because it relies on an unfortunate
specific sequence of events. It only happens when creating journal
entries, and when trying to sync them successfully connecting to the
server to fetch the journal list and the content of the journal itself,
and only failing when coming to push the journals.
Many thanks to "359" (this user's preferred alias) for reporting the
issue that resulted in this fix.
I assumed the lifecycle of the fragment and the task were tied because they
are tied to the instance, but it looks like I was wrong. We need to
explicitly cancel tasks.
This patch changes the fetching so if the last fetch returned less entries
than the limit, we don't try and fetch again because we already know there
are no others left.
Before this commit we used to fetch the whole journal entry list in one
go, which caused issues in two cases:
1. On slow internet connections the download may fail.
2. With big journals: Android interrupts sync managers if they don't
perform any significant network traffic for over a minute[1],
and because we would first download and only then process, we would
sometimes hit this threshold.
Current chunk size is set to 50.
1: https://developer.android.com/reference/android/content/AbstractThreadedSyncAdapter.html
I set it to 2048 following the NIST recommendations[1] which said it was
OK, but actually, as pointed out by Dominik Schürmann, it's probably a
better idea to set to 3072.
Users who already have a 2048 key pair won't be affected, while users
who don't will have a 3072 key created for them. Users with different
key lengths can interact with each other without any issues.
1: https://www.keylength.com/en/4/
This change makes clicking on journal items in the list to show in a
separate activity. At the moment it just makes for a slightly nicer
presentation. In the future we would change it to show the data in a
nice formatted way instead of a raw dump of the vObject.
There was an issue that for the first load it would only check the url
after a redirect (if there is one), which meant that for example,
the dashboard, would open in app because you'd be redirected to the
login page.
Account migration works in most cases, though while testing I managed to
get it to fail in some rare occasions. This commit adds a check to
verify the number of contacts we thought we migrated is equal to the
number of contacts we have after migration.
If the check fails, it presents the user with a notification that opens
the relevant FAQ entry on the EteSync website.
This doesn't work well, but I'm keeping it since it's still better than
what was there before.
We have a problem that on initial sync with long enough logs, Android
kills the sync manager before completion. The reason for that is that
due to the fact that EteSync first downloads the whole journal and only then
processes it, the sync manager spends a minute without making any
network traffic, which in turn makes Android kill the sync[1].
This should probably be fixed by paginating the initial download, that
is, downloading and processing the journal in chunks, which is possibly
a good idea regardless.
1: https://developer.android.com/reference/android/content/AbstractThreadedSyncAdapter.html
It seems like there's an issue with Android that sometimes the userData
passed to addAccountExplicitly is not correctly set in the Android cache
making it return null on subsequent fetches. It doesn't always happen
because some cases clear the cache, however I can consistently trigger
it by creating and deleting an account a few times in a row.
This is an ugly workaround. For some reason a sync is called when an
account is removed. Since the main account is removed, we get an invalid
account exception when trying to fetch it.
Need to find out why a sync is even triggered and just remove it there.
Android allows only having one address book per account, so until now
users of EteSync were only able to have one address book. This was
always an annoying limitation, but even more so now that journal sharing
is implemented.
Luckily, DAVdroid recently implemented multiple account support by
creating sub-accounts for address books.
This patch is an import of the DAVdroid changes, with adjustments to
work with EteSync, and a few changes that did not make sense for
EteSync. The original commits' split didn't provide any value over this
squash, and the amount of adjustments and addition needed to be done to
apply them, made me decide to squash this change together.
This commit is mostly based on:
dfec72ce6b8ff5e0780e9ac4418c81d080f4b60b
9817594da14ad8dffae18de386e14aeaf41312b9
Thanks to @dschuermann for the suggestion. This makes it easier for
people of non-latin speaking cultures to compare the fingerprints.
Code is based off of Signal's fingerprint generation.
This change only works for calendars at the moment, because we don't have shared
address books anyway.
This is currently only implemented in the client, and only as a read-only attribute,
you can't make a journal read-only yet. This requires server support that is not yet
there, but it's better to be ready for this sooner rather than later.
Some of the information is now saved there, and more will be transferred
soon. CollectionInfo includes the encrypted part, and journalentity the
non-encrypted part of the journal info, so both are needed.
The reason for that is that before version 2, all the journals of a
particular user shared the same encryption key, which means, sharing a
journal of version one, would essentially give away the encryption key
of all of its journals, even the private ones.
This is thus blocked for security reasons.
This currently just adds the journal back, but doesn't re-apply the
journal, so the calendar for example would be empty, but the journal
itself would be listed and visible.
At the moment we only support one address book per user, and sharing
address books will interfere with this model. Hopefully, we'll add
multiple address book support in the next release, and then we'll
re-enable this.
We were not detecting the version correctly, but always just assumed
latest version, which is obviously wrong.
In addition, before this commit we used to automatically verify on
fetch, which wasn't flexible enough for some use cases. This fixes that
too.
We need the keypair to access shared journals, so we need to make sure
to fetch it at the moment we create the local account, which is what
this commit does.
This is used to create a keypair and put it on the server if one doesn't
exist, and fetch it and save it locally if one does.
It's currently called from the account activity.
If a journal has a key set to it (usually used for shared journals), use
it instead of the symmetric key. The key of the journal is asymmetrically
encrypted using our keypair.
Requery doesn't automatically update column constraints, and there was
an issue with it applying indexes before adding the new columns which
was also causing troubles. This commit, while ugly, just manually
updates the database using raw SQL to what we expect it to be.
Having it in raw sql was slowing down development, and was error-prone.
It's much cleaner now, easier to handle, and enables us to develop
faster.
In this change I also fixed the fetching of journals to be by service
and id, not just id, because just id is not guaranteed to be unique.
Before this change, uid was unique on its own, this was wrong, because
due to shared journals, we can have the same journal in two accounts,
and we can thus have both journal and entry UIDs more than once.
This fixes the constraint to be unique for journal, uid, and service,
uid combinations.
This is currently disabled for journals because of a bug in requery.
The server was changed so the owner of the journal, and the encrypted
key (if a shared journal) would be exposed. This change fetches it, and
saves it.
Although this release is claimed to fix the afterLoad issue, this is not
the case. We are just updating it so the upgrade path later one would be
easier.
Unfortunately this requery version introduced a regression. When adding
a new account, it takes syncign a few times until it works. It looks
like requery is not loading the recently saved instances.
This reverts commit f0f70ff1c61996d0e45d8f72d24654c739c325f7.
Prior to this version of requery there was an issue that prevented
afterLoad to be called in some cases. This issue forced us to add an
explicit call to afterLoad. It's now fixed, so the workaround is no
longer required.
Reference issue: https://github.com/requery/requery/issues/487
We were storing the ctag separately although the data was already
present in the journal. The last entry's ID is always the CTAG.
This could cause issues if sync is aborted exactly at the right time.
I managed to trigger this issue on rare cases.
It's only used for migrations, and has been considered deprecated for a
while. Mark it as deprecated to make it extra obvious that this should
not be used.
* move file name/UID generation from SyncManager to LocalContact, LocalEvent, LocalTask
* rename updateFileNameAndUID() to prepareForUpload()
* use random UUID for contacts, UidGenerator with Android device ID for events/tasks
* LocalEvent.prepareForUpload(): use existing UID_2445 if available
This also adds an icon (that will soon be replaced with the icon of the
relevant account), and shares the design between the calendar and the
contacts.
This set of commits add import from local accounts.
It's a bit rough around the edges, but it's good enough to go in, so work can continue
collaboratively.
The crypto class now behaves differently depending on the version of the
journal.
The current difference is in the key derivation, and that the new
version of the crypto also hmacs the version automatically whenever it
hmacs anything.
The versioning was added for better future-proofing of the code.
The derivation change was done because before we were creating the same
password for all of the journals, now we do it per-journal. This means
that we can, if needed in the future use this password as the journal
password when sharing journals without compromising the security of the
rest of the journals.
The app update broadcast receiver is only called on the first update,
not install, which was causing EteSync to think it was updating from
version 1 on the first update, doesn't matter which version one was
updating from.
This fixes it by saving the version on the first run.
Before this change we were adding them to cache before they were
processed, potentially persisting malformed entries, or entries we
haven't yet processed causing issues if sync was aborted before an entry
was fully processed.
Commit 5d1c90dcba fixed a bug where
entries added from the server were marked as "local only" (null etag)
which was causing issues. That commit fixes it for newly added resources,
but existing resources remained broken.
This commit goes through the database and fixes all of the existing
broken resources. It skips dirty entries because figuring out if they
were just created or updated is complex, and the chances of doing an
update at exactly the same time there are dirty entries is quite low,
so the complexity involved is just not worth it.
Before this commit we would create new entries from the server without
an etag, essentially marking them as "local only". While the actual
value of the eTag is not currently used, null or not matters.
Because the resources were "local only", we would get weird behaviours
like having an "ADD" action when changing a resource.
Before this change we would only add "deletes" to the server when the
resource has been previously uploaded. This means that if a resource has
been created and then deleted before a sync, it would not be saved,
which is essentially data-loss.
This commit fixes it, so we always upload a delete entry.
It's really annoying that it doesn't do it automatically as it should,
in the meanwhile, add this workaround.
I reported it to upstream:
https://github.com/requery/requery/issues/487
Clearing the cache is a good idea regardless, though because of the
unique constraints in the cache on the journal name, this was causing
issues when deleting an account and then adding it back.
It's very raw and hacky at the moment, it's just a preview release so
people could see their data is saved, and can look at it in its raw
form until we implement a nicer view.
Before this commit it was only used to override the api endpoint,
not it's also used to override the weburl. This is needed since we now
load the etesync website inside the app and not in an external web
browser.
Without this change, if the putting on server of a new collection fails,
the url would already be updated, and since having a url indicates it
exists on the server, trying to save it later would result in a 404.
Adding this because users were asking about the history feature. While
the history is maintained, there's currently no GUI to explore it, so
I've added this stub to make it more obvious that it's not there yet.
Before this commit the texts were different, and odd.
For example, the text in the selector would be:
Every 4 hours
and the text in the preview would be:
Every 240 minutes
This follows the previous change and puts more information in the
exceptions (like parts of the http request and response) for better
debugging. This also moves the handling of "retry after" to the
exception itself instead of outside.
Also improved the text of one of the exception invocations.
Before this change exceptions would print the message of the error code.
For example, for 500 they would print "Internal Server Error".
With this change we can now override this message with something more
sensible we got from the serer, for example "User is inactive."
This is a possible error message we get when we get error code 403
(permission denied) from the server. We then handle it explicitly by
sending the user to the dashboard.
With this change we no can launch external urls. For all I know this
doesn't work without this trick (an intent in the middle).
I also applied a transparent theme to the activity to avoid seeing the
launched activity briefly before opening external urls.
This is based on my experience working on "Share To Clipboard".
I was trying to avoid it, and keep it as davdroid both for attribution,
and making it easy to cherry-pick fixes from DAVdroid.
However, it seems to be causing clashes with the davdroid app, although
every piece of documentation claims otherwise.[1]
At least it seems like cherry-picks can still be achieved using:
git cherry-pick -s recursive -X find-renames=30 COMMIT
1. https://developer.android.com/studio/build/application-id.html
(one such doc)
I changed some strings (but kept the name) and remove others. This means
that the existing translations are no longer valid for those, so I wrote
a small script to see which strings I've changed/removed and removed
those from the translations.
Since we now use a cached version of the localDeleted/Dirty, we can create the entries
after we fetch. We also use the entries to override whatever changes came from the
server because we assume (for now) our copy is the correct one.
* contact data hash code = hash code of data fields and group memberships
* Before every contact sync, all dirty contacts are checked whether they're
"really dirty" (= data hash code has changed). If they're not, the DIRTY
flag is reset. Works around Android 7 behavior of setting contacts to DIRTY
even if onky meta data has been updated (for instance, lastContacted after
a call or SMS),
* When an "upload" sync is initiated by notifyChange and there are no
"really dirty" contacts, the sync is ignored.
* contact upload: clearDirty() saves hash code, too
* contact download: create()/update() saves hash code, too
* debugging: sync flags (extras) are now logged
This commit includes the major changes between DAVdroid and EteSync. It
adjusts the app to use the EteSync protocol and server. It includes some
ugliness still, and it's a squash of many ugly snapshot commits while
hacking on the initial DAVdroid code.
History should be "clean" from this point onwards.
* AccountDetailsFragment: at account creation, enable task sync only when OpenTasks is installed
* PackageChangedReceiver: when packages are (un)installed, check for OpenTasks availability and (de)activate task sync for all accounts accordingly
* LocalTaskList: don't cache OpenTasks availability
* sync_*.xml: don't activate sync by default
* share debug info: always use attachment (before: send inline if it was small enough)
* use FileProvider for debug info attachment (for Android 7 compatibility)
* dav4android, ical4android fixes
