Support deviceOwnerAuthentication

Author: louischan-oursky

packages/authgear-capacitor/ios/Plugin/AuthgearPlugin.swift

@@ -148,9 +148,11 @@ public class AuthgearPlugin: CAPPlugin {
     }
 
     @objc func checkBiometricSupported(_ call: CAPPluginCall) {
+        let ios = call.getObject("ios")!
+        let policyString = ios["policy"] as! String
         DispatchQueue.main.async {
             do {
-                try self.impl.checkBiometricSupported()
+                try self.impl.checkBiometricSupported(policyString: policyString)
                 call.resolve()
             } catch {
                 error.reject(call)
@@ -163,13 +165,13 @@ public class AuthgearPlugin: CAPPlugin {
         let payload = call.getObject("payload")!
         let ios = call.getObject("ios")!
         let constraint = ios["constraint"] as! String
+        let policyString = ios["policy"] as! String
         let localizedReason = ios["localizedReason"] as! String
         let tag = "com.authgear.keys.biometric.\(kid)"
-        let policy = LAPolicy.deviceOwnerAuthenticationWithBiometrics
 
         DispatchQueue.main.async {
             self.impl.createBiometricPrivateKey(
-                policy: policy,
+                policyString: policyString,
                 localizedReason: localizedReason,
                 constraint: constraint,
                 kid: kid,

packages/authgear-capacitor/ios/Plugin/AuthgearPluginImpl.swift

@@ -282,9 +282,9 @@ import Capacitor
         }
     }
 
-    @objc func checkBiometricSupported() throws {
+    @objc func checkBiometricSupported(policyString: String) throws {
         if #available(iOS 11.3, *) {
-            let policy = LAPolicy.deviceOwnerAuthenticationWithBiometrics
+            let policy = LAPolicy.from(string: policyString)!
             let laContext = self.makeLAContext(policy: policy)
             var error: NSError?
             laContext.canEvaluatePolicy(policy, error: &error)
@@ -297,14 +297,15 @@ import Capacitor
     }
 
     @objc func createBiometricPrivateKey(
-        policy: LAPolicy,
+        policyString: String,
         localizedReason: String,
         constraint: String,
         kid: String,
         tag: String,
         payload: [String: Any],
         completion: @escaping (String?, Error?) -> Void
     ) {
+        let policy = LAPolicy.from(string: policyString)!
         let ctx = makeLAContext(policy: policy)
         ctx.evaluatePolicy(policy, localizedReason: localizedReason) { ok, error in
             if let error = error {

packages/authgear-react-native/ios/AGAuthgearReactNative.m

@@ -395,7 +395,9 @@ + (BOOL)application:(UIApplication *)application
 RCT_EXPORT_METHOD(checkBiometricSupported:(NSDictionary *)options resolver:(RCTPromiseResolveBlock)resolve rejecter:(RCTPromiseRejectBlock)reject)
 {
     if (@available(iOS 11.3, *)) {
-        LAPolicy policy = LAPolicyDeviceOwnerAuthenticationWithBiometrics;
+        NSDictionary *iosDict = options[@"ios"];
+        NSString *policyString = iosDict[@"policy"];
+        LAPolicy policy = [self laPolicyFromString:policyString];
         LAContext *context = [self laContextFromPolicy:policy];
         NSError *error = NULL;
         [context canEvaluatePolicy:policy error:&error];
@@ -435,8 +437,9 @@ + (BOOL)application:(UIApplication *)application
     NSDictionary *iosDict = options[@"ios"];
     NSString *constraint = iosDict[@"constraint"];
     NSString *localizedReason = iosDict[@"localizedReason"];
+    NSString *policyString = iosDict[@"policy"];
     NSString *tag = [NSString stringWithFormat:@"com.authgear.keys.biometric.%@", kid];
-    LAPolicy policy = LAPolicyDeviceOwnerAuthenticationWithBiometrics;
+    LAPolicy policy = [self laPolicyFromString:policyString];
     LAContext *context = [self laContextFromPolicy:policy];
 
     [context evaluatePolicy:policy localizedReason:localizedReason reply:^(BOOL success, NSError * _Nullable laError) {