Introduce component agnostic communication

Usually, the communication between native and the app is done via
sending intents to either broadcast or activity. These communication
channels are for launching root requests dialogs, sending root request
notifications (the toast you see when an app gained root access), and
root request logging.

Sending intents by am (activity manager) usually requires specifying
the component name in the format of <pkg>/<class name>. This means parts
of Magisk Manager cannot be randomized or else the native daemon is
unable to know where to send data to the app.

On modern Android (not sure which API is it introduced), it is possible
to send broadcasts to a package, not a specific component. Which
component will receive the intent depends on the intent filter declared
in AndroidManifest.xml. Since we already have a mechanism in native code
to keep track of the package name of Magisk Manager, this makes it
perfect to pass intents to Magisk Manager that have components being
randomly obfuscated (stub APKs).

There are a few caveats though. Although this broadcasting method works
perfectly fine on AOSP and most systems, there are OEMs out there
shipping ROMs blocking broadcasts unexpectedly. In order to make sure
Magisk works in all kinds of scenarios, we run actual tests every boot
to determine which communication method should be used.

We have 3 methods in total, ordered in preference:
1. Broadcasting to a package
2. Broadcasting to a specific component
3. Starting a specific activity component

Method 3 will always work on any device, but the downside is anytime
a communication happens, Magisk Manager will steal foreground focus
regardless of whether UI is drawn. Method 1 is the only way to support
obfuscated stub APKs. The communication test will test method 1 and 2,
and if Magisk Manager is able to receive the messages, it will then
update the daemon configuration to use whichever is preferable. If none
of the broadcasts can be delivered, then the fallback method 3 will be
used.

app/src/main/java/com/topjohnwu/magisk/utils/SuLogger.kt

@@ -2,14 +2,13 @@ package com.topjohnwu.magisk.utils
 
 import android.content.Context
 import android.content.Intent
-import android.content.pm.PackageManager
 import android.os.Process
 import android.widget.Toast
 import com.topjohnwu.magisk.Config
 import com.topjohnwu.magisk.R
 import com.topjohnwu.magisk.data.database.PolicyDao
 import com.topjohnwu.magisk.data.repository.LogRepository
-import com.topjohnwu.magisk.extensions.inject
+import com.topjohnwu.magisk.extensions.get
 import com.topjohnwu.magisk.model.entity.MagiskPolicy
 import com.topjohnwu.magisk.model.entity.toLog
 import com.topjohnwu.magisk.model.entity.toPolicy
@@ -17,15 +16,13 @@ import java.util.*
 
 object SuLogger {
 
-    private val context: Context by inject()
-
-    fun handleLogs(intent: Intent) {
+    fun handleLogs(context: Context, intent: Intent) {
 
         val fromUid = intent.getIntExtra("from.uid", -1)
         if (fromUid < 0) return
         if (fromUid == Process.myUid()) return
 
-        val pm: PackageManager by inject()
+        val pm = context.packageManager
 
         val notify: Boolean
         val data = intent.extras
@@ -36,7 +33,7 @@ object SuLogger {
             }.getOrElse { return }
         } else {
             // Doesn't report whether notify or not, check database ourselves
-            val policyDB: PolicyDao by inject()
+            val policyDB = get<PolicyDao>()
             val policy = policyDB.fetch(fromUid).blockingGet() ?: return
             notify = policy.notification
             policy
@@ -46,7 +43,7 @@ object SuLogger {
             return
 
         if (notify)
-            handleNotify(policy)
+            handleNotify(context, policy)
 
         val toUid = intent.getIntExtra("to.uid", -1)
         if (toUid < 0) return
@@ -62,11 +59,11 @@ object SuLogger {
             date = Date()
         )
 
-        val logRepo: LogRepository by inject()
+        val logRepo = get<LogRepository>()
         logRepo.put(log).blockingGet()?.printStackTrace()
     }
 
-    private fun handleNotify(policy: MagiskPolicy) {
+    private fun handleNotify(context: Context, policy: MagiskPolicy) {
         if (policy.notification && Config.suNotification == Config.Value.NOTIFICATION_TOAST) {
             Utils.toast(
                 context.getString(
@@ -80,16 +77,16 @@ object SuLogger {
         }
     }
 
-    fun handleNotify(intent: Intent) {
+    fun handleNotify(context: Context, intent: Intent) {
         val fromUid = intent.getIntExtra("from.uid", -1)
         if (fromUid < 0) return
         if (fromUid == Process.myUid()) return
         runCatching {
-            val packageManager: PackageManager by inject()
-            val policy = fromUid.toPolicy(packageManager)
+            val pm = context.packageManager
+            val policy = fromUid.toPolicy(pm)
                 .copy(policy = intent.getIntExtra("policy", -1))
             if (policy.policy >= 0)
-                handleNotify(policy)
+                handleNotify(context, policy)
         }
     }
 }