From b2bd2cafeca3efedea2fe0f127da44e8d38508ff Mon Sep 17 00:00:00 2001
From: Dominik Dzienia <dlvoy@users.noreply.github.com>
Date: Thu, 22 Oct 2020 23:18:52 +0200
Subject: [PATCH] Allow exporting OTP authenticator secred, for manual
 provisioning or use in hardware OTP token burning apps

---
 .../activities/SmsCommunicatorOtpActivity.kt  | 21 +++++++++++++++++--
 .../smsCommunicator/otp/OneTimePassword.kt    |  6 ++++++
 app/src/main/res/values/strings.xml           |  4 ++++
 3 files changed, 29 insertions(+), 2 deletions(-)

diff --git a/app/src/main/java/info/nightscout/androidaps/plugins/general/smsCommunicator/activities/SmsCommunicatorOtpActivity.kt b/app/src/main/java/info/nightscout/androidaps/plugins/general/smsCommunicator/activities/SmsCommunicatorOtpActivity.kt
index 12e4679d38..e1cdce7d17 100644
--- a/app/src/main/java/info/nightscout/androidaps/plugins/general/smsCommunicator/activities/SmsCommunicatorOtpActivity.kt
+++ b/app/src/main/java/info/nightscout/androidaps/plugins/general/smsCommunicator/activities/SmsCommunicatorOtpActivity.kt
@@ -1,5 +1,8 @@
 package info.nightscout.androidaps.plugins.general.smsCommunicator.activities
 
+import android.content.ClipData
+import android.content.ClipboardManager
+import android.content.Context
 import android.content.res.Resources
 import android.graphics.Color
 import android.os.Bundle
@@ -16,8 +19,8 @@ import info.nightscout.androidaps.plugins.general.smsCommunicator.SmsCommunicato
 import info.nightscout.androidaps.plugins.general.smsCommunicator.otp.OneTimePassword
 import info.nightscout.androidaps.plugins.general.smsCommunicator.otp.OneTimePasswordValidationResult
 import info.nightscout.androidaps.utils.FabricPrivacy
-import info.nightscout.androidaps.utils.alertDialogs.OKDialog
 import info.nightscout.androidaps.utils.ToastUtils
+import info.nightscout.androidaps.utils.alertDialogs.OKDialog
 import info.nightscout.androidaps.utils.resources.ResourceHelper
 import kotlinx.android.synthetic.main.activity_smscommunicator_otp.*
 import net.glxn.qrgen.android.QRCode
@@ -66,9 +69,23 @@ class SmsCommunicatorOtpActivity : NoSplashAppCompatActivity() {
                 Runnable {
                     otp.ensureKey(true)
                     updateGui()
-                    ToastUtils.showToastInUiThread(this, R.string.smscommunicator_otp_reset_successful)
+                    ToastUtils.Long.infoToast(this, resourceHelper.gs(R.string.smscommunicator_otp_reset_successful))
                 })
         }
+
+        smscommunicator_otp_provisioning.setOnLongClickListener {
+            OKDialog.showConfirmation(this,
+                resourceHelper.gs(R.string.smscommunicator_otp_export_title),
+                resourceHelper.gs(R.string.smscommunicator_otp_export_prompt),
+                Runnable {
+                    val clipboard = getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager
+                    val clip = ClipData.newPlainText("OTP Secret", otp.provisioningSecret())
+                    clipboard.primaryClip = clip
+                    ToastUtils.Long.infoToast(this, resourceHelper.gs(R.string.smscommunicator_otp_export_successful))
+                })
+
+            true
+        }
     }
 
     @Synchronized
diff --git a/app/src/main/java/info/nightscout/androidaps/plugins/general/smsCommunicator/otp/OneTimePassword.kt b/app/src/main/java/info/nightscout/androidaps/plugins/general/smsCommunicator/otp/OneTimePassword.kt
index 3610fb37b4..75b913c302 100644
--- a/app/src/main/java/info/nightscout/androidaps/plugins/general/smsCommunicator/otp/OneTimePassword.kt
+++ b/app/src/main/java/info/nightscout/androidaps/plugins/general/smsCommunicator/otp/OneTimePassword.kt
@@ -121,4 +121,10 @@ class OneTimePassword @Inject constructor(
     fun provisioningURI(): String? =
         key?.let { "otpauth://totp/AndroidAPS:" + URLEncoder.encode(name(), "utf-8").replace("+", "%20") + "?secret=" + BaseEncoding.base32().encode(it.encoded).replace("=", "") + "&issuer=AndroidAPS" }
 
+    /**
+     * Return secret used to provision Authenticator apps, in Base32 format
+     */
+    fun provisioningSecret(): String? =
+        key?.let { BaseEncoding.base32().encode(it.encoded).replace("=", "") }
+
 }
\ No newline at end of file
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 891c266dd0..e9dd459b02 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -1376,6 +1376,10 @@
     <string name="smscommunicator_otp_reset_prompt">Are you sure to reset Authenticator key? It will render all currently configured Authenticators invalid, and you will need to set them up again.</string>
     <string name="smscommunicator_otp_reset_successful">New Authenticator Key was generated! Please use updated QRCode to provision authenticators.</string>
 
+    <string name="smscommunicator_otp_export_title">Exporting OTP secret</string>
+    <string name="smscommunicator_otp_export_prompt">Are you sure you want to copy OTP secret to clipboard?\n\nYou may only need that if your authenticator app have issues scanning QRCode, you want to enter it manually or you want to configure hardware OTP token using dedicated app.</string>
+    <string name="smscommunicator_otp_export_successful">OTP secret (in Base32 format) exported and copied into clipboard. Paste it into authenticator or hardware OTP burner!</string>
+
     <string name="smscommunicator_otp_step1_install_header">1. Install Authenticator</string>
     <string name="smscommunicator_otp_step2_provisioning_header">2. Scan code to setup AndroidAPS OTP codes</string>
     <string name="smscommunicator_otp_step3_test_header">3. Test One-Time-Password</string>