Add FaceID detection

naoufal · Nov 5, 2017 · 81185c0 · 81185c0
1 parent 3ca5ec9
commit 81185c0
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Showing 3 changed files with 29 additions and 19 deletions.
diff --git a/TouchID.h b/TouchID.h
@@ -1,5 +1,6 @@
 #import <React/RCTBridgeModule.h>
+#import <LocalAuthentication/LocalAuthentication.h>
 
 @interface TouchID : NSObject <RCTBridgeModule>
-
+    - (NSString *_Nonnull)getBiometryType:(LAContext *_Nonnull)context;
 @end
diff --git a/TouchID.ios.js b/TouchID.ios.js
@@ -15,12 +15,12 @@ const ERRORS = require('./data/errors');
 export default {
   isSupported() {
     return new Promise((resolve, reject) => {
-      NativeTouchID.isSupported(error => {
+      NativeTouchID.isSupported((error, biometryType) => {
         if (error) {
           return reject(createError(error.message));
         }
 
-        resolve(true);
+        resolve(biometryType);
       });
     });
   },

diff --git a/TouchID.m b/TouchID.m
@@ -1,6 +1,5 @@
 #import "TouchID.h"
 #import <React/RCTUtils.h>
-#import <LocalAuthentication/LocalAuthentication.h>
 
 @implementation TouchID
 
@@ -10,9 +9,9 @@ @implementation TouchID
 {
     LAContext *context = [[LAContext alloc] init];
     NSError *error;
-
+    
     if ([context canEvaluatePolicy:LAPolicyDeviceOwnerAuthenticationWithBiometrics error:&error]) {
-        callback(@[[NSNull null], @true]);
+        callback(@[[NSNull null], [self getBiometryType:context]]);
         // Device does not support TouchID
     } else {
         callback(@[RCTMakeError(@"RCTTouchIDNotSupported", nil, nil)]);
@@ -21,11 +20,11 @@ @implementation TouchID
 }
 
 RCT_EXPORT_METHOD(authenticate: (NSString *)reason
-                      callback: (RCTResponseSenderBlock)callback)
+                  callback: (RCTResponseSenderBlock)callback)
 {
     LAContext *context = [[LAContext alloc] init];
     NSError *error;
-
+    
     // Device has TouchID
     if ([context canEvaluatePolicy:LAPolicyDeviceOwnerAuthenticationWithBiometrics error:&error]) {
         // Attempt Authentification
@@ -36,55 +35,65 @@ @implementation TouchID
              // Failed Authentication
              if (error) {
                  NSString *errorReason;
-
+                 
                  switch (error.code) {
                      case LAErrorAuthenticationFailed:
                          errorReason = @"LAErrorAuthenticationFailed";
                          break;
-
+                         
                      case LAErrorUserCancel:
                          errorReason = @"LAErrorUserCancel";
                          break;
-
+                         
                      case LAErrorUserFallback:
                          errorReason = @"LAErrorUserFallback";
                          break;
-
+                         
                      case LAErrorSystemCancel:
                          errorReason = @"LAErrorSystemCancel";
                          break;
-
+                         
                      case LAErrorPasscodeNotSet:
                          errorReason = @"LAErrorPasscodeNotSet";
                          break;
-
+                         
                      case LAErrorTouchIDNotAvailable:
                          errorReason = @"LAErrorTouchIDNotAvailable";
                          break;
-
+                         
                      case LAErrorTouchIDNotEnrolled:
                          errorReason = @"LAErrorTouchIDNotEnrolled";
                          break;
-
+                         
                      default:
                          errorReason = @"RCTTouchIDUnknownError";
                          break;
                  }
-
+                 
                  NSLog(@"Authentication failed: %@", errorReason);
                  callback(@[RCTMakeError(errorReason, nil, nil)]);
                  return;
              }
-
+             
              // Authenticated Successfully
              callback(@[[NSNull null], @"Authenticat with Touch ID."]);
          }];
-
+        
         // Device does not support TouchID
     } else {
         callback(@[RCTMakeError(@"RCTTouchIDNotSupported", nil, nil)]);
         return;
     }
 }
 
+- (NSString *)getBiometryType:(LAContext *)context
+{
+    if (@available(iOS 11, *)) {
+        return context.biometryType == LABiometryTypeFaceID ? @"FaceID" : @"TouchID";
+    }
+
+    return @"TouchID";
+}
+
 @end
+