XAL wrapper

XAL means "Xbox Live Authentication Library", according to Microsoft

MS uses OAuth 2.0 specification for signing into an account. However, it relies on fetching device tokens, SHA-256 hashes and other scary (probably) stuff - so, to make things much easier I decided to "take" the official XAL library, which does all this stuff on it's own.

It also provides secure user credentials storage with WebView auth process.

What this module does

This module is basically Java-files from the official companion application, which has been decompiled by jadx, paired with native library.

Privacy/Security measures

The native library actually collects some analytics data + the package name, so there is a risk of a ban in case MS decided to take some action (I hope no).

Plans

In future this module could be replaced with a Java/Kotlin-only MS OAuth 2.0 implementation. On the other sides, fixes and improvements in Java-side are planned.