From 8cd85c346216d34f08920c0dfebc51926b272bf4 Mon Sep 17 00:00:00 2001
From: DipaTapsale <ghorpade.dipa@gmail.com>
Date: Mon, 7 Dec 2020 13:16:00 +0530
Subject: [PATCH] LAContext invalidated

---
 ios/ReactNativeFingerprintScanner.m | 7 ++++++-
 src/index.js                        | 2 ++
 src/invalidate.android.js           | 1 +
 src/invalidate.ios.js               | 8 ++++++++
 4 files changed, 17 insertions(+), 1 deletion(-)
 create mode 100644 src/invalidate.android.js
 create mode 100644 src/invalidate.ios.js

diff --git a/ios/ReactNativeFingerprintScanner.m b/ios/ReactNativeFingerprintScanner.m
index 5d324ebc..10d34861 100644
--- a/ios/ReactNativeFingerprintScanner.m
+++ b/ios/ReactNativeFingerprintScanner.m
@@ -9,6 +9,7 @@
 @implementation ReactNativeFingerprintScanner
 
 RCT_EXPORT_MODULE();
+LAContext *context;
 
 RCT_EXPORT_METHOD(isSensorAvailable: (RCTResponseSenderBlock)callback)
 {
@@ -47,7 +48,7 @@ @implementation ReactNativeFingerprintScanner
                   fallback: (BOOL)fallbackEnabled
                   callback: (RCTResponseSenderBlock)callback)
 {
-    LAContext *context = [[LAContext alloc] init];
+    context = [[LAContext alloc] init];
     NSError *error;
 
     // Toggle fallback button
@@ -121,6 +122,10 @@ @implementation ReactNativeFingerprintScanner
     }
 }
 
+RCT_EXPORT_METHOD(invalidate){
+    [context invalidate];
+}
+
 - (NSString *)getBiometryType:(LAContext *)context
 {
     if (@available(iOS 11, *)) {
diff --git a/src/index.js b/src/index.js
index 3fc84b54..c19a6bc0 100644
--- a/src/index.js
+++ b/src/index.js
@@ -1,9 +1,11 @@
 import authenticate from './authenticate';
 import isSensorAvailable from './isSensorAvailable';
 import release from './release';
+import invalidate from './invalidate';
 
 export default {
   authenticate,
   release,
   isSensorAvailable,
+  invalidate,
 };
diff --git a/src/invalidate.android.js b/src/invalidate.android.js
new file mode 100644
index 00000000..461f67a0
--- /dev/null
+++ b/src/invalidate.android.js
@@ -0,0 +1 @@
+export default () => null;
diff --git a/src/invalidate.ios.js b/src/invalidate.ios.js
new file mode 100644
index 00000000..39802f6c
--- /dev/null
+++ b/src/invalidate.ios.js
@@ -0,0 +1,8 @@
+import { NativeModules } from 'react-native';
+
+const { ReactNativeFingerprintScanner } = NativeModules;
+
+export default () => {
+   return ReactNativeFingerprintScanner.invalidate();
+}
+