add device tls info to about screen

app/build.gradle

@@ -9,10 +9,10 @@ android {
 
     defaultConfig {
         applicationId "oppen.gemini.ariane"
-        minSdkVersion 29
+        minSdkVersion 21
         targetSdkVersion 30
-        versionCode 7
+        versionCode 8
-        versionName "1.0.0"
+        versionName "2.0.0"
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }

app/src/main/java/oppen/ariane/ui/modals_menus/about/AboutDialog.kt

@@ -3,11 +3,21 @@ package oppen.ariane.ui.modals_menus.about
 import android.content.Context
 import android.content.Intent
 import android.net.Uri
+import android.os.Handler
+import android.os.Looper
 import android.view.View
 import androidx.appcompat.app.AppCompatDialog
+import androidx.appcompat.widget.AppCompatTextView
 import kotlinx.android.synthetic.main.dialog_about.view.*
+import kotlinx.coroutines.GlobalScope
+import kotlinx.coroutines.launch
 import oppen.ariane.BuildConfig
 import oppen.ariane.R
+import java.lang.StringBuilder
+import java.security.SecureRandom
+import javax.net.ssl.SSLContext
+import javax.net.ssl.SSLSocket
+import javax.net.ssl.SSLSocketFactory
 
 object AboutDialog {
 
@@ -21,7 +31,7 @@ object AboutDialog {
             dialog.dismiss()
         }
 
-        view.version_label.text = BuildConfig.VERSION_NAME;
+        view.version_label.text = BuildConfig.VERSION_NAME
 
         view.gnu_license_button.setOnClickListener {
             context.startActivity(Intent(Intent.ACTION_VIEW).apply {
@@ -35,7 +45,39 @@ object AboutDialog {
             })
         }
 
+        buildTLSInfo(view.tls_info)
+
 
         dialog.show()
     }
+
+    private fun buildTLSInfo(tlsInfo: AppCompatTextView?) {
+        GlobalScope.launch {
+            val sb = StringBuilder()
+
+            val sslContext = SSLContext.getInstance("TLS")
+            sslContext.init(null, null, SecureRandom())
+            val factory: SSLSocketFactory = sslContext.socketFactory
+            val socket = factory.createSocket() as SSLSocket
+
+            sb.append("\n")
+            sb.append("Supported TLS protocols on this device:\n\n")
+            socket.supportedProtocols.forEach { protocol ->
+                sb.append("$protocol \n")
+            }
+
+            sb.append("\n\n")
+
+            sb.append("Supported cipher suites on this device:\n\n")
+            val allCipherSuites = factory.supportedCipherSuites
+            allCipherSuites.forEach { cipherSuite ->
+                sb.append("$cipherSuite \n")
+            }
+
+            sb.append("\n")
+            Handler(Looper.getMainLooper()).post{
+                tlsInfo?.text = sb.toString()
+            }
+        }
+    }
 }

app/src/main/res/layout/dialog_about.xml

@@ -82,13 +82,13 @@
                 android:layout_height="wrap_content"
                 android:text="Öppenlab.net"/>
 
-            <TextView
+            <View
-                android:layout_width="wrap_content"
+                android:layout_width="match_parent"
-                android:layout_height="wrap_content"
+                android:layout_height="1dp"
-                android:paddingTop="@dimen/default_margin_big"
+                android:layout_marginTop="@dimen/default_margin"
-                android:paddingBottom="@dimen/default_margin_big"
+                android:layout_marginBottom="@dimen/default_margin"
-                android:textColor="@color/stroke"
+                android:alpha="0.5"
-                android:text="@string/home_icon_attribution" />
+                android:background="?attr/colorOnSurface" />
 
             <TextView
                 android:layout_width="wrap_content"
@@ -105,9 +105,20 @@
                 android:text="@string/gnu_link"/>
 
 
+            <View
+                android:layout_width="match_parent"
+                android:layout_height="1dp"
+                android:layout_marginBottom="@dimen/default_margin"
+                android:layout_marginTop="@dimen/default_margin"
+                android:alpha="0.5"
+                android:background="?attr/colorOnSurface" />
 
-
+            <androidx.appcompat.widget.AppCompatTextView
-        <!-- OppenLab -->
+                android:id="@+id/tls_info"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:textIsSelectable="true"
+                android:textSize="12sp"/>