Doesn't access database directly anymore but goes through AxolotlService
now to obtain list of fingerprints associated with an Account/Contact.
This should prevent orphaned keys littering the UI which previously
couldn't be removed through the Clear Devices function.
Together with 1c79982da84964c1d81179a0927d9cd1eadf53de this fixes#1393
Slider used to skip back on drag-and-drop action. The switch doesn't
trigger explicit whole UI refreshes anymore, it now directly adjusts the
"done" button's locked status.
XmppAxolotlMessage is now entirely responsible for handling encryption
and decryption of messages, only leveraging XmppAxolotlSession as a
packing/unpacking primitive for payload keys.
Removed pseudo-dead session generation code step from prepareMessage
function, as sessions have been created by invoking the
TrustKeysActivity for a while now.
Added prepareKeyTransportMessage function, which creates a message with
no payload. The key that is packed into the header keyElements can then
be used for other purposes (e.g. encrypted file transfer).
Messages sent from another device of the own account are now explicitly
tagged as carboned message. The session detection logic now uses this
tag to find "session borders".
Plaintext messages that were received while in an encrypted session are
now colored red. We define "in an encrypted session" if a) the last
message sent by our own device before the message under consideration
(or any message received between then and now) was encrypted AND b) the
next message will be sent encrypted or the next message sent after the
one under consideration was sent encrypted
Moves SQLiteAxolotlStore and XmppAxolotlSession into proper classes.
IdentityKeys trust statuses are now cached in an LruCache to prevent
hammering the database when rendering the UI.
We introduce a new trust state: INACTIVE. This state is intended for
old keys that have been removed.
When a TRUSTED device is removed from the PEP devicelist, it's status
will be set to INACTIVE. INACTIVE keys are shown in the UI as greyed
out, non-interactible key rows. Messages are not encrypted for INACTIVE
devices.
When an INACTIVE device reappears in PEP, or a message is received from
an INACTIVE device, it is set back to trusted.
* CryptoNextBeta: (60 commits)
Lock TrustKeys if no trusted keys are available
Optimize imports
Use MD style for key trust toggle switch
Fix set/remove OnUpdateBlocklistListener
Fix axolotl database migration
Remove device list from EditAccount
Add clear devices to overflow menu in EditAccount
Ask for key trust when sending messages
Encrypt files for HTTP upload in encrypted chats
Refactor trust key ui and show in account details
Send correct body for HTTP files
Handle file transmission properly in axolotl
Remove unneccessary code
Fix trust status for outgoing messages
Don't merge messages with different trust statuses
Fix copying of axolotl keys to clipboard
Add refresh icon to v21 theme
Disable Axolotl option if not usable
Show trust status of messages' originating session
Add key trust toggle to ContactDetailsActivity
...
If the contact (or the own account) has keys that have UNDECIDED trust,
we now drop the user into the new TrustKeysActivity, where they have to
decide for each new key whether it should be TRUSTED or UNTRUSTED.
Refactored the trust key row UI element so it can be used in multiple
places. It now also uses a slider to toggle the trust state, and the
redundant trust state description was removed.
EditAccountActivity now shows the keys of other devices associated with
that account.
Tag sent messages with own fingerprint, set own fingerprint as always
trusted, include own fingerprint in database trust search, explicitly
reset trust colorfilter
