Closes #632

Also, throw IOException on NPE. This should not append because NPE
occurs on some devices when copying lib/. But in case of another corner
case with NPEs, this commit will prevent a crash and log info.

Fixes #631

Long encrypted messages are embed in containers and sent in multiple
splitted messages. Splitted messages aren't displayed and Silence stores
them to wait for the full container. This way to send encrypted messages
creates a risk to consider an unencrypted message as a contained one,
resulting in lost of unencrypted messages in rare (but plausible)
situations.

This commit changes the way to send encrypted messages. They aren't
splitted in containers anymore. Non contained encrypted messages will be
fully recognized and decrypted by previous Silence releases.

This commit do not change the way to receive and decrypt messages yet.
So it can still lost unencrypted messages. The way to receive messages
will be updated to do not take care of containers in the future, after a
1-month time frame. This is because once containers will be ignored,
contained encrypted messages will result in garbage. With a 1-month time
frame, most of users should have received the updated Silence release
that do not use containers, then allowing us to do not expect to receive
contained encrypted messages and not to lower user experience.

Also, this commit adds a function to update the type of a message. This
prepares the consequence of not losing messages: encrypted messages are
prefixed according to the expected type of the message, but this prefix
can be valid for multiple types.

This reverts commit a38b372b.

TYPE_TEXT_VARIATION_VISIBLE_PASSWORD does not guarantee that password
will not leak into memory.

Fixes #614

Based on https://github.com/WhisperSystems/Signal-Android/commit/ba849bce2c90287e820a3008e9dc9a1b14de19fc
and https://github.com/WhisperSystems/Signal-Android/commit/677c7732cfda2469f9096350657c4e751a884069

Carey Metcalfe authored Jul 02, 2017 and Bastien Le Querrec committed Oct 04, 2017

This will allow the screenshots to be used in the F-Droid store.

See https://fdroid.gitlab.io/fdroid-website/docs/All_About_Descriptions_Graphics_and_Screenshots/
for more details

Ref #583

F-Droid fails to make reproductible builds with this ID.

Fixes #576

FeuRenard authored Apr 05, 2016 and Bastien Le Querrec committed Mar 29, 2017

Fixes https://github.com/WhisperSystems/Signal-Android/issues/5227
Closes https://github.com/WhisperSystems/Signal-Android/pull/5415
// FREEBIE

Upstream commit: https://github.com/WhisperSystems/Signal-Android/commit/52b1e17c368d511648b467d4a0a0710768a71a2e

Moxie Marlinspike authored Mar 15, 2017 and Bastien Le Querrec committed Mar 29, 2017

// FREEBIE

Upstream commit: https://github.com/WhisperSystems/Signal-Android/commit/9273f5cc671c5cc370549c81f435a8b694ad3e7c

Moxie Marlinspike authored Mar 08, 2017 and Bastien Le Querrec committed Mar 29, 2017

Fixes https://github.com/WhisperSystems/Signal-Android/issues/5751
Fixes https://github.com/WhisperSystems/Signal-Android/issues/6218
// FREEBIE

Upstream commit: https://github.com/WhisperSystems/Signal-Android/commit/2f46c6ca1fba65596c08bfcab24a2e47df163ef5

* Do not display warning about legacy key exchange message if
auto-complete is enabled
* Intercept clicks to send an updated key exchange message if
auto-complete is disabled
* Reword strings

Fixes #557

Fixes #350