Merge pull request #2 from MultiColourPixel/main

Allow consumers to check if device is attached

Author: kinoroy

LibFido2Swift/Sources/LibFido2Swift/LibFido2Swift.swift

@@ -66,6 +66,15 @@ public class FIDO2 {
 
     public init() {}
 
+    public func hasDeviceAttached() -> Bool {
+        do {
+            let _ = try findFirstDevicePath()
+            return true
+        } catch {
+            return false
+        }
+    }
+    
     public func deviceHasPin() throws -> Bool {
         let devPath = try findFirstDevicePath()
 

LibFido2TestApp/ContentView.swift

@@ -16,6 +16,8 @@ struct ContentView: View {
     @AppStorage("origin") var origin = ""
     @AppStorage("devicePin") var devicePin = ""
     @State var responseJson = ""
+    @State private var isDevicePresent = false
+    @State private var isDevicePresentAlertShown = false
     var body: some View {
         VStack {
             VStack {
@@ -33,6 +35,17 @@ struct ContentView: View {
                         }
                     }
                 }
+                Button("Is Device Present?") {
+                    isDevicePresent = fido2.hasDeviceAttached()
+                    isDevicePresentAlertShown = true
+                }
+                .alert(isPresented: $isDevicePresentAlertShown) {
+                    Alert(
+                        title: Text("Device is \(isDevicePresent ? "present" : "not present")"),
+                        message: nil,
+                        dismissButton: .default(Text("OK"))
+                    )
+                }
                 Button("Cancel") {
                     fido2.cancel()
                 }