rewrite and improve biometric authenticator

app/src/main/java/com/lagradost/cloudstream3/MainActivity.kt

@@ -113,6 +113,7 @@ import com.lagradost.cloudstream3.ui.result.txt
 import com.lagradost.cloudstream3.ui.search.SearchFragment
 import com.lagradost.cloudstream3.ui.search.SearchResultBuilder
 import com.lagradost.cloudstream3.ui.settings.SettingsFragment.Companion.isEmulatorSettings
+import com.lagradost.cloudstream3.ui.settings.SettingsFragment.Companion.isTruePhone
 import com.lagradost.cloudstream3.ui.settings.SettingsFragment.Companion.isTrueTvSettings
 import com.lagradost.cloudstream3.ui.settings.SettingsFragment.Companion.isTvSettings
 import com.lagradost.cloudstream3.ui.settings.SettingsFragment.Companion.updateTv
@@ -133,9 +134,8 @@ import com.lagradost.cloudstream3.utils.AppUtils.setDefaultFocus
 import com.lagradost.cloudstream3.utils.BackupUtils.backup
 import com.lagradost.cloudstream3.utils.BackupUtils.setUpBackup
 import com.lagradost.cloudstream3.utils.BiometricAuthenticator
-import com.lagradost.cloudstream3.utils.BiometricAuthenticator.TAG
-import com.lagradost.cloudstream3.utils.BiometricAuthenticator.isTruePhone
-import com.lagradost.cloudstream3.utils.BiometricAuthenticator.promptInfo
+import com.lagradost.cloudstream3.utils.BiometricAuthenticator.deviceHasPasswordPinLock
+import com.lagradost.cloudstream3.utils.BiometricAuthenticator.startBiometricAuthentication
 import com.lagradost.cloudstream3.utils.Coroutines.ioSafe
 import com.lagradost.cloudstream3.utils.Coroutines.main
 import com.lagradost.cloudstream3.utils.DataStore.getKey
@@ -1176,7 +1176,7 @@ class MainActivity : AppCompatActivity(), ColorPickerDialogListener, BiometricAu
                 val newLocalBinding = ActivityMainTvBinding.inflate(layoutInflater, null, false)
                 setContentView(newLocalBinding.root)
 
-                if(isTrueTvSettings() && ANIMATED_OUTLINE) {
+                if (isTrueTvSettings() && ANIMATED_OUTLINE) {
                     TvFocus.focusOutline = WeakReference(newLocalBinding.focusOutline)
                     newLocalBinding.root.viewTreeObserver.addOnScrollChangedListener {
                         TvFocus.updateFocusView(TvFocus.lastFocus.get(), same = true)
@@ -1188,14 +1188,12 @@ class MainActivity : AppCompatActivity(), ColorPickerDialogListener, BiometricAu
                     newLocalBinding.focusOutline.isVisible = false
                 }
 
-                if(isTrueTvSettings()) {
+                if (isTrueTvSettings()) {
                     newLocalBinding.root.viewTreeObserver.addOnGlobalFocusChangeListener { _, newFocus ->
                         centerView(newFocus)
                     }
                 }
 
-
-
                 ActivityMainBinding.bind(newLocalBinding.root) // this may crash
             } else {
                 val newLocalBinding = ActivityMainBinding.inflate(layoutInflater, null, false)
@@ -1213,12 +1211,20 @@ class MainActivity : AppCompatActivity(), ColorPickerDialogListener, BiometricAu
         val authEnabled = settingsManager.getBoolean(getString(R.string.biometric_enabled_key), false)
         val noAccounts = settingsManager.getBoolean(getString(R.string.skip_startup_account_select_key), false) || accounts.count() <= 1
 
-        if (isTruePhone() && authEnabled && noAccounts ) {
+        if (isTruePhone() && authEnabled && noAccounts) {
+            if (deviceHasPasswordPinLock(this)) {
+                startBiometricAuthentication(this,
+                    R.string.biometric_authentication_title,
+                    false
+                )
 
-            BiometricAuthenticator.initializeBiometrics(this@MainActivity, this)
-            BiometricAuthenticator.checkBiometricAvailability()
-            BiometricAuthenticator.biometricPrompt.authenticate(promptInfo)
-            binding?.navHostFragment?.isInvisible = true // hide background while authenticating
+                BiometricAuthenticator.biometricPrompt.authenticate(BiometricAuthenticator.promptInfo)
+
+                // hide background while authenticating, Sorry moms & dads 🙏
+                binding?.navHostFragment?.isInvisible = true
+            } else {
+                showToast(R.string.phone_not_secured, Toast.LENGTH_LONG)
+            }
         }
 
         // Automatically enable jsdelivr if cant connect to raw.githubusercontent.com
@@ -1760,7 +1766,8 @@ class MainActivity : AppCompatActivity(), ColorPickerDialogListener, BiometricAu
         )
     }
 
-    override fun onAuthenticationSuccess() { /** Biometric stuff **/
+    /** Biometric stuff **/
+    override fun onAuthenticationSuccess() {
         // make background (nav host fragment) visible again
         binding?.navHostFragment?.isInvisible = false
     }

app/src/main/java/com/lagradost/cloudstream3/ui/account/AccountSelectActivity.kt

@@ -3,6 +3,8 @@ package com.lagradost.cloudstream3.ui.account
 import android.annotation.SuppressLint
 import android.content.Intent
 import android.os.Bundle
+import android.util.Log
+import android.widget.Toast
 import androidx.appcompat.app.AppCompatActivity
 import androidx.lifecycle.ViewModelProvider
 import androidx.preference.PreferenceManager
@@ -17,8 +19,11 @@ import com.lagradost.cloudstream3.mvvm.observe
 import com.lagradost.cloudstream3.ui.AutofitRecyclerView
 import com.lagradost.cloudstream3.ui.account.AccountAdapter.Companion.VIEW_TYPE_EDIT_ACCOUNT
 import com.lagradost.cloudstream3.ui.account.AccountAdapter.Companion.VIEW_TYPE_SELECT_ACCOUNT
+import com.lagradost.cloudstream3.ui.settings.SettingsFragment.Companion.isTruePhone
 import com.lagradost.cloudstream3.ui.settings.SettingsFragment.Companion.isTvSettings
 import com.lagradost.cloudstream3.utils.BiometricAuthenticator
+import com.lagradost.cloudstream3.utils.BiometricAuthenticator.deviceHasPasswordPinLock
+import com.lagradost.cloudstream3.utils.BiometricAuthenticator.startBiometricAuthentication
 import com.lagradost.cloudstream3.utils.DataStoreHelper.accounts
 import com.lagradost.cloudstream3.utils.DataStoreHelper.selectedKeyIndex
 import com.lagradost.cloudstream3.utils.DataStoreHelper.setAccount
@@ -43,20 +48,25 @@ class AccountSelectActivity : AppCompatActivity(), BiometricAuthenticator.Biomet
 
         val settingsManager = PreferenceManager.getDefaultSharedPreferences(this)
         val authEnabled = settingsManager.getBoolean(getString(R.string.biometric_enabled_key), false)
-        val skipStartup = settingsManager.getBoolean(
-            getString(R.string.skip_startup_account_select_key),
-            false
+        val skipStartup = settingsManager.getBoolean(getString(R.string.skip_startup_account_select_key), false
         ) || accounts.count() <= 1
 
         viewModel = ViewModelProvider(this)[AccountViewModel::class.java]
 
         fun askBiometricAuth() {
 
-            if (BiometricAuthenticator.isTruePhone() && authEnabled) {
-                BiometricAuthenticator.initializeBiometrics(this@AccountSelectActivity, this)
-                BiometricAuthenticator.checkBiometricAvailability()
+            if (isTruePhone() && authEnabled) {
+                if (deviceHasPasswordPinLock(this)) {
+                    startBiometricAuthentication(
+                        this,
+                        R.string.biometric_authentication_title,
+                        false
+                    )
                     BiometricAuthenticator.biometricPrompt.authenticate(BiometricAuthenticator.promptInfo)
                 }
+            } else {
+                showToast(R.string.phone_not_secured, Toast.LENGTH_LONG)
+            }
         }
 
         // Don't show account selection if there is only
@@ -178,7 +188,8 @@ class AccountSelectActivity : AppCompatActivity(), BiometricAuthenticator.Biomet
         startActivity(mainIntent)
         finish() // Finish the account selection activity
     }
+
     override fun onAuthenticationSuccess() {
-        //ask github.com/IndusAryan if confusion occurs
+       Log.i(BiometricAuthenticator.TAG,"Authentication successful in AccountSelectActivity")
     }
 }

app/src/main/java/com/lagradost/cloudstream3/ui/settings/SettingsFragment.kt

@@ -19,6 +19,7 @@ import androidx.preference.PreferenceFragmentCompat
 import androidx.preference.PreferenceManager
 import com.google.android.material.appbar.AppBarLayout
 import com.google.android.material.appbar.MaterialToolbar
+import com.lagradost.cloudstream3.AcraApplication.Companion.context
 import com.lagradost.cloudstream3.R
 import com.lagradost.cloudstream3.databinding.MainSettingsBinding
 import com.lagradost.cloudstream3.mvvm.logError
@@ -155,6 +156,11 @@ class SettingsFragment : Fragment() {
             return getLayoutInt() == 2
         }
 
+        // phone exclusive
+        fun isTruePhone(): Boolean {
+            return !isTrueTvSettings() && !isTvSettings() && context?.isEmulatorSettings() != true
+        }
+
         private fun Context.isAutoTv(): Boolean {
             val uiModeManager = getSystemService(Context.UI_MODE_SERVICE) as UiModeManager?
             // AFT = Fire TV

app/src/main/java/com/lagradost/cloudstream3/utils/BiometricAuthenticator.kt

@@ -5,7 +5,7 @@ import android.app.KeyguardManager
 import android.content.Context
 import android.os.Build
 import android.util.Log
-import android.widget.Toast
+import android.widget.Toast.LENGTH_SHORT
 import androidx.appcompat.app.AppCompatActivity
 import androidx.biometric.BiometricManager
 import androidx.biometric.BiometricManager.Authenticators.BIOMETRIC_STRONG
@@ -13,137 +13,162 @@ import androidx.biometric.BiometricManager.Authenticators.BIOMETRIC_WEAK
 import androidx.biometric.BiometricManager.Authenticators.DEVICE_CREDENTIAL
 import androidx.biometric.BiometricPrompt
 import androidx.core.content.ContextCompat
-import com.lagradost.cloudstream3.AcraApplication.Companion.context
 import com.lagradost.cloudstream3.CommonActivity.showToast
+import com.lagradost.cloudstream3.MainActivity
 import com.lagradost.cloudstream3.R
-import com.lagradost.cloudstream3.ui.settings.SettingsFragment.Companion.isEmulatorSettings
-import com.lagradost.cloudstream3.ui.settings.SettingsFragment.Companion.isTrueTvSettings
-import com.lagradost.cloudstream3.ui.settings.SettingsFragment.Companion.isTvSettings
 
 object BiometricAuthenticator {
 
+    private const val MAX_FAILED_ATTEMPTS = 3
+    private var failedAttempts = 0
+    const val TAG = "cs3Auth"
+
     private lateinit var biometricManager: BiometricManager
     lateinit var biometricPrompt: BiometricPrompt
     lateinit var promptInfo: BiometricPrompt.PromptInfo
-    const val TAG = "cs3Auth"
 
-    private var authCallback: BiometricAuthCallback? = null
+    var authCallback: BiometricAuthCallback? = null // listen to authentication success
 
-    fun initializeBiometrics(activity: Activity, callback: BiometricAuthCallback) {
+    private fun initializeBiometrics(activity: Activity) {
         val executor = ContextCompat.getMainExecutor(activity)
-        authCallback = callback // to listen success authentication
         biometricManager = BiometricManager.from(activity)
 
-        biometricPrompt = BiometricPrompt(activity as AppCompatActivity, executor, object : BiometricPrompt.AuthenticationCallback() {
+        if (!::promptInfo.isInitialized) {
+            initBiometricPrompt(
+                activity as AppCompatActivity,
+                R.string.biometric_authentication_title,
+                false
+            )
+        }
+
+        biometricPrompt = BiometricPrompt(
+            activity as AppCompatActivity,
+            executor,
+            object : BiometricPrompt.AuthenticationCallback() {
 
                 override fun onAuthenticationError(errorCode: Int, errString: CharSequence) {
                     super.onAuthenticationError(errorCode, errString)
-                    Log.d(TAG, "Authentication error: $errString")
+                    showToast("$errString", LENGTH_SHORT)
+                    Log.i(TAG, "$errorCode")
                     activity.finish()
+                    failedAttempts++
+                    if (failedAttempts >= MAX_FAILED_ATTEMPTS) {
+                        failedAttempts = 0
+                        activity.finish()
+                    } else {
+                        failedAttempts = 0
+                        MainActivity().finish()
+                    }
                 }
 
                 override fun onAuthenticationSucceeded(result: BiometricPrompt.AuthenticationResult) {
                     super.onAuthenticationSucceeded(result)
-                    Log.d(TAG, "Biometric succeeded.")
-                    unblockMain() //to make background visible after authenticating
+                    failedAttempts = 0
+                    authCallback?.onAuthenticationSuccess()
                 }
 
                 override fun onAuthenticationFailed() {
                     super.onAuthenticationFailed()
-                    Log.d(TAG, "Authentication error")
-                    showToast(R.string.biometric_failed, Toast.LENGTH_SHORT)
+                    failedAttempts++
+                    if (failedAttempts >= MAX_FAILED_ATTEMPTS) {
+                        failedAttempts = 0
                         activity.finish()
                     }
+                }
             })
+    }
 
+    private fun initBiometricPrompt(
+        activity: Activity,
+        title: Int,
+        setDeviceCred: Boolean,
+    ) {
+        val description = activity.getString(R.string.biometric_prompt_description)
+        if (setDeviceCred) {
+            // For API level > 30, Newer API setAllowedAuthenticators is used
             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
 
+                val authFlag = DEVICE_CREDENTIAL or BIOMETRIC_WEAK or BIOMETRIC_STRONG
                 promptInfo = BiometricPrompt.PromptInfo.Builder()
-                .setTitle("Unlock CloudStream")
-                //.setSubtitle("Log in using your biometric credential")
-                //.setNegativeButtonText("Use account password")
-                .setAllowedAuthenticators(BIOMETRIC_WEAK or BIOMETRIC_STRONG or DEVICE_CREDENTIAL)
+                    .setTitle(activity.getString(title))
+                    .setDescription(description)
+                    .setAllowedAuthenticators(authFlag)
                     .build()
-
-        } else if (context?.let { deviceHasPasswordPinLock(it) } == true) {
+            } else {
                 @Suppress("DEPRECATION")
                 promptInfo = BiometricPrompt.PromptInfo.Builder()
-                .setTitle("Unlock CloudStream")
+                    .setTitle(activity.getString(title))
+                    .setDescription(description)
+                    .setDeviceCredentialAllowed(true)
+                    .build()
+            }
+        } else {
+            // fallback for A12+ when both fingerprint & Face unlock is absent but PIN is set
+            @Suppress("DEPRECATION")
+            promptInfo = BiometricPrompt.PromptInfo.Builder()
+                .setTitle(activity.getString(title))
+                .setDescription(description)
                 .setDeviceCredentialAllowed(true)
                 .build()
         }
     }
 
-    fun checkBiometricAvailability() {
+    private fun isBiometricHardWareAvailable(): Boolean {
+        var result = false
 
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
-
-            // Strong and device credential bundle cannot be checked at same time in API < A11 (R)
-            when (biometricManager.canAuthenticate(BIOMETRIC_WEAK or BIOMETRIC_STRONG or DEVICE_CREDENTIAL)) {
-                BiometricManager.BIOMETRIC_SUCCESS ->
-                    Log.d(TAG, "App can authenticate.")
-
-                BiometricManager.BIOMETRIC_ERROR_NO_HARDWARE ->
-                    Log.d(TAG, "No biometric sensor found.")
-
-                BiometricManager.BIOMETRIC_ERROR_HW_UNAVAILABLE ->
-                    Log.d(TAG, "Biometric authentication is currently unavailable.")
-
-                BiometricManager.BIOMETRIC_ERROR_NONE_ENROLLED ->
-                    showToast(R.string.biometric_not_enrolled, Toast.LENGTH_LONG)
-
-                BiometricManager.BIOMETRIC_ERROR_SECURITY_UPDATE_REQUIRED ->
-                    showToast(R.string.biometric_update_required, Toast.LENGTH_LONG)
-
-                BiometricManager.BIOMETRIC_ERROR_UNSUPPORTED ->
-                    showToast(R.string.biometric_unsupported, Toast.LENGTH_SHORT)
-
-                BiometricManager.BIOMETRIC_STATUS_UNKNOWN ->
-                    Log.e(TAG, "Unknown error encountered while authenticating fingerprint.")
+            when (biometricManager.canAuthenticate(
+                DEVICE_CREDENTIAL or BIOMETRIC_STRONG or BIOMETRIC_WEAK
+            )) {
+                BiometricManager.BIOMETRIC_SUCCESS -> result = true
+                BiometricManager.BIOMETRIC_ERROR_NO_HARDWARE -> result = false
+                BiometricManager.BIOMETRIC_ERROR_HW_UNAVAILABLE -> result = false
+                BiometricManager.BIOMETRIC_ERROR_NONE_ENROLLED -> result = false
+                BiometricManager.BIOMETRIC_ERROR_SECURITY_UPDATE_REQUIRED -> result = true
+                BiometricManager.BIOMETRIC_ERROR_UNSUPPORTED -> result = true
+                BiometricManager.BIOMETRIC_STATUS_UNKNOWN -> result = false
+            }
+        } else {
+            @Suppress("DEPRECATION")
+            when (biometricManager.canAuthenticate()) {
+                BiometricManager.BIOMETRIC_SUCCESS -> result = true
+                BiometricManager.BIOMETRIC_ERROR_NO_HARDWARE -> result = false
+                BiometricManager.BIOMETRIC_ERROR_HW_UNAVAILABLE -> result = false
+                BiometricManager.BIOMETRIC_ERROR_NONE_ENROLLED -> result = false
+                BiometricManager.BIOMETRIC_ERROR_SECURITY_UPDATE_REQUIRED -> result = true
+                BiometricManager.BIOMETRIC_ERROR_UNSUPPORTED -> result = true
+                BiometricManager.BIOMETRIC_STATUS_UNKNOWN -> result = false
             }
         }
 
-        else {
-
-            when (biometricManager.canAuthenticate(BIOMETRIC_WEAK or BIOMETRIC_STRONG)) {
-
-            BiometricManager.BIOMETRIC_SUCCESS ->
-                 Log.d(TAG, "App can authenticate using biometrics.")
-
-            BiometricManager.BIOMETRIC_ERROR_NO_HARDWARE ->
-                Log.d(TAG, "No biometric features available on this device.")
-
-            BiometricManager.BIOMETRIC_ERROR_HW_UNAVAILABLE ->
-                Log.e(TAG, "Biometric features are currently unavailable.")
-
-            BiometricManager.BIOMETRIC_ERROR_NONE_ENROLLED ->
-                showToast(R.string.biometric_not_enrolled, Toast.LENGTH_LONG)
-
-            BiometricManager.BIOMETRIC_ERROR_SECURITY_UPDATE_REQUIRED ->
-                showToast(R.string.biometric_update_required, Toast.LENGTH_LONG)
-
-            BiometricManager.BIOMETRIC_ERROR_UNSUPPORTED ->
-                showToast(R.string.biometric_unsupported, Toast.LENGTH_SHORT)
-
-            BiometricManager.BIOMETRIC_STATUS_UNKNOWN ->
-                Log.d(TAG, "Unknown error encountered while authenticating fingerprint.")
-
-            }
-        }
+        return result
     }
 
-    // yes, this feature is phone exclusive
-    fun isTruePhone(): Boolean {
-        return !isTrueTvSettings() && !isTvSettings() && context?.isEmulatorSettings() != true
+    // only needed for Android 9 and below
+    fun deviceHasPasswordPinLock(context: Context?): Boolean {
+        val keyMgr =
+            context?.getSystemService(AppCompatActivity.KEYGUARD_SERVICE) as KeyguardManager
+        return keyMgr.isKeyguardSecure
     }
 
-    fun unblockMain() {
-        authCallback?.onAuthenticationSuccess()
-    }
+    fun startBiometricAuthentication(activity: Activity, title: Int, setDeviceCred: Boolean) {
+        initializeBiometrics(activity)
 
-    private fun deviceHasPasswordPinLock(con: Context): Boolean {
-        val keyManager = con.getSystemService(AppCompatActivity.KEYGUARD_SERVICE) as KeyguardManager
-        return keyManager.isKeyguardSecure
+        if (isBiometricHardWareAvailable()) {
+            authCallback = activity as? BiometricAuthCallback
+            initBiometricPrompt(activity, title, setDeviceCred)
+            biometricPrompt.authenticate(promptInfo)
+
+        } else {
+            if (deviceHasPasswordPinLock(activity)) {
+                authCallback = activity as? BiometricAuthCallback
+                initBiometricPrompt(activity, R.string.password_pin_authentication_title, true)
+                biometricPrompt.authenticate(promptInfo)
+
+            } else {
+                showToast(R.string.biometric_unsupported, LENGTH_SHORT)
+            }
+        }
     }
 
     interface BiometricAuthCallback {

app/src/main/java/com/lagradost/cloudstream3/utils/UIHelper.kt

@@ -532,7 +532,6 @@ object UIHelper {
             WindowInsetsControllerCompat(window, View(this)).show(WindowInsetsCompat.Type.systemBars())
 
         } else {*/ /** WINDOW COMPAT IS BUGGY DUE TO FU*KED UP PLAYER AND TRAILERS **/
-            Suppress("DEPRECATION")
             window.decorView.systemUiVisibility =
                 (View.SYSTEM_UI_FLAG_LAYOUT_STABLE or View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN)
         //}

app/src/main/res/values/strings.xml

@@ -745,13 +745,13 @@
     <string name="auto_rotate_video_desc">Enable automatic switching of screen orientation based on video orientation</string>
     <string name="auto_rotate_video">Auto rotate</string>
 
+    <!-- For Biometrics -->
+    <string name="biometric_authentication_title">Unlock CloudStream</string>
     <string name="biometric_setting">Fingerprint sensor authentication</string>
-    <string name="biometric_success">Fingerprint authentication succeeded</string>
-    <string name="biometric_failed">Fingerprint authentication failed</string>
-    <string name="biometric_prompt_title">Unlock CloudStream</string>
-    <string name="biometric_not_enrolled">Please add fingerprint or screen lock or disable setting</string>
-    <string name="biometric_update_required">Please update software and security patches.</string>
-    <string name="biometric_unsupported">Biometric authentication is not supported on this device</string>
     <string name="biometric_enabled_key" translatable="false">biometric_key</string>
+    <string name="password_pin_authentication_title">Password/PIN Authentication</string>
+    <string name="biometric_unsupported">Biometric authentication is not supported on this device</string>
+    <string name="phone_not_secured">Please disable fingerprint authentication if device has no lock.</string>
+    <string name="biometric_prompt_description">This window will close after few failed attempts. You\'ll have to restart the App.</string>
 
 </resources>