Merge branch 'master' into release/1.0.0

Author: Kapusch

.vscode/launch.json

@@ -0,0 +1,41 @@
+{
+  "version": "0.2.0",
+  "inputs": [
+    {
+      "id": "iosSimulatorUdid",
+      "type": "promptString",
+      "description": "Simulator UDID (run: xcrun simctl list devices | rg Booted)",
+      "default": "760FECA7-AD46-4AE7-A112-385D384450C8"
+    }
+  ],
+  "configurations": [
+    {
+      "name": "iOS Sample (Run x64 simulator)",
+      "type": "node-terminal",
+      "request": "launch",
+      "command": "dotnet build ${workspaceFolder}/samples/Kapusch.Facebook.iOS.Sample/Kapusch.Facebook.iOS.Sample.csproj -t:Run -c Debug -p:RuntimeIdentifier=iossimulator-x64 -p:_DeviceName=:v2:udid=${input:iosSimulatorUdid}"
+    },
+    {
+      "name": "iOS Sample (Device logs)",
+      "type": "node-terminal",
+      "request": "launch",
+      "command": "xcrun simctl spawn ${input:iosSimulatorUdid} log stream --style compact --level debug --predicate 'process == \"Kapusch.Facebook.iOS.Sample\"'"
+    },
+    {
+      "name": "iOS Sample (Build only x64)",
+      "type": "node-terminal",
+      "request": "launch",
+      "command": "dotnet build ${workspaceFolder}/samples/Kapusch.Facebook.iOS.Sample/Kapusch.Facebook.iOS.Sample.csproj -c Debug -p:RuntimeIdentifier=iossimulator-x64"
+    }
+  ],
+  "compounds": [
+    {
+      "name": "iOS Sample (Run + Device logs)",
+      "configurations": [
+        "iOS Sample (Device logs)",
+        "iOS Sample (Run x64 simulator)"
+      ],
+      "stopAll": true
+    }
+  ]
+}

samples/Kapusch.Facebook.iOS.Sample/AppDelegate.cs

@@ -1,3 +1,4 @@
+using System.Security.Cryptography;
 using Foundation;
 using Kapusch.Facebook.iOS;
 using UIKit;
@@ -29,10 +30,11 @@ public override bool FinishedLaunching(UIApplication application, NSDictionary?
 
 			try
 			{
+				var rawNonce = GenerateRawNonce();
 				var result = await NativeFacebookLogin.SignInAsync(
 					presenter.Handle,
 					FacebookTrackingMode.Limited,
-					rawNonce: null,
+					rawNonce: rawNonce,
 					CancellationToken.None
 				);
 
@@ -54,6 +56,12 @@ public override bool FinishedLaunching(UIApplication application, NSDictionary?
 		return true;
 	}
 
+	private static string GenerateRawNonce(int size = 32)
+	{
+		var bytes = RandomNumberGenerator.GetBytes(size);
+		return Convert.ToBase64String(bytes).TrimEnd('=').Replace('+', '-').Replace('/', '_');
+	}
+
 	public override bool OpenUrl(UIApplication application, NSUrl url, NSDictionary options) =>
 		NativeFacebookLogin.HandleOpenUrl(
 			application.Handle,

src/Kapusch.FacebookApisForiOSComponents/Native/iOS/KapuschFacebookAuthInterop/Sources/KapuschFacebookAuthInterop/Interop.swift

@@ -155,7 +155,10 @@ public func kfb_facebook_signin_start(
 	let tracking = trackingMode == FacebookTrackingMode.enabled.rawValue
 		? LoginTracking.enabled
 		: LoginTracking.limited
-	let nonce = noncePtr.flatMap { String(cString: $0) }
+	let nonce = noncePtr.flatMap { raw -> String? in
+		let trimmed = String(cString: raw).trimmingCharacters(in: .whitespacesAndNewlines)
+		return trimmed.isEmpty ? nil : trimmed
+	}
 	if tracking == .limited && nonce == nil {
 		callFacebookCallback(
 			callback,
@@ -170,13 +173,35 @@ public func kfb_facebook_signin_start(
 		return
 	}
 
-	let loginNonce = nonce ?? ""
+	let loginConfig: LoginConfiguration? = {
+		if let nonce {
+			return LoginConfiguration(
+				permissions: ["public_profile", "email"],
+				tracking: tracking,
+				nonce: nonce
+			)
+		}
 
-	let loginConfig = LoginConfiguration(
-		permissions: ["public_profile", "email"],
-		tracking: tracking,
-		nonce: loginNonce
-	)
+		return LoginConfiguration(
+			permissions: ["public_profile", "email"],
+			tracking: tracking,
+			messengerPageId: nil
+		)
+	}()
+
+	guard let loginConfig else {
+		callFacebookCallback(
+			callback,
+			status: .failed,
+			errorCode: "invalid_login_configuration",
+			errorMessage: "Cannot create a valid Facebook LoginConfiguration.",
+			context: context
+		)
+		FacebookState.inProgress = false
+		FacebookState.callback = nil
+		FacebookState.context = nil
+		return
+	}
 
 	LoginManager().logIn(
 		viewController: presenting,