Update API to access current Wi-Fi SSID

CHANGELOG.md

@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## Unreleased
+
+### Changed
+
+- Update API to access current Wi-Fi SSID.
+
 ## 3.0.0 (2020-11-15)
 
 ### Added

TunnelKit.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
     s.name              = "TunnelKit"
-    s.version           = "3.0.1"
+    s.version           = "3.1.0"
     s.summary           = "Non-official OpenVPN client for Apple platforms."
 
     s.homepage          = "https://github.com/passepartoutvpn/tunnelkit"

TunnelKit/Sources/AppExtension/InterfaceObserver.swift

@@ -35,7 +35,12 @@
 //
 
 import Foundation
+#if os(iOS)
+import NetworkExtension
 import SystemConfiguration.CaptiveNetwork
+#else
+import CoreWLAN
+#endif
 import SwiftyBeaver
 
 private let log = SwiftyBeaver.self
@@ -80,9 +85,14 @@ public class InterfaceObserver: NSObject {
     }
 
     private func fireWifiChangeObserver() {
-        let currentWifiName = currentWifiNetworkName()
-        if (currentWifiName != lastWifiName) {
-            if let current = currentWifiName {
+        InterfaceObserver.fetchCurrentSSID {
+            self.fireWifiChange(withSSID: $0)
+        }
+    }
+    
+    private func fireWifiChange(withSSID ssid: String?) {
+        if ssid != lastWifiName {
+            if let current = ssid {
                 log.debug("SSID is now '\(current.maskedDescription)'")
                 if let last = lastWifiName, (current != last) {
                     queue?.async {
@@ -93,7 +103,7 @@ public class InterfaceObserver: NSObject {
                 log.debug("SSID is null")
             }
         }
-        lastWifiName = currentWifiName
+        lastWifiName = ssid
     }
 
     /**
@@ -101,20 +111,32 @@ public class InterfaceObserver: NSObject {
 
      - Returns: The current Wi-Fi SSID if any.
      **/
-    public func currentWifiNetworkName() -> String? {
+    public static func fetchCurrentSSID(completionHandler: @escaping (String?) -> Void) {
         #if os(iOS)
-        guard let interfaceNames = CNCopySupportedInterfaces() as? [CFString] else {
-            return nil
-        }
-        for name in interfaceNames {
-            guard let iface = CNCopyCurrentNetworkInfo(name) as? [String: Any] else {
-                continue
+//        if #available(iOS 14.0, *) {
+//            NEHotspotNetwork.fetchCurrent {
+//                completionHandler($0?.ssid)
+//            }
+//        } else {
+            guard let interfaceNames = CNCopySupportedInterfaces() as? [CFString] else {
+                completionHandler(nil)
+                return
             }
-            if let ssid = iface["SSID"] as? String {
-                return ssid
+            for name in interfaceNames {
+                guard let iface = CNCopyCurrentNetworkInfo(name) as? [String: Any] else {
+                    continue
+                }
+                if let ssid = iface["SSID"] as? String {
+                    completionHandler(ssid)
+                    return
+                }
             }
-        }
+            completionHandler(nil)
+//        }
+        #else
+        let client = CWWiFiClient.shared()
+        let ssid = client.interfaces()?.compactMap { $0.ssid() }.first
+        completionHandler(ssid)
         #endif
-        return nil
     }
 }

TunnelKit/Sources/Protocols/OpenVPN/AppExtension/OpenVPNTunnelProvider.swift

@@ -36,6 +36,11 @@
 
 import NetworkExtension
 import SwiftyBeaver
+#if os(iOS)
+import SystemConfiguration.CaptiveNetwork
+#else
+import CoreWLAN
+#endif
 import __TunnelKitCore
 
 private let log = SwiftyBeaver.self
@@ -90,8 +95,6 @@ open class OpenVPNTunnelProvider: NEPacketTunnelProvider {
     
     private let memoryLog = MemoryDestination()
 
-    private let observer = InterfaceObserver()
-    
     private let tunnelQueue = DispatchQueue(label: OpenVPNTunnelProvider.description(), qos: .utility)
     
     private let prngSeedLength = 64
@@ -829,10 +832,12 @@ extension OpenVPNTunnelProvider {
     }
 
     private func logCurrentSSID() {
-        if let ssid = observer.currentWifiNetworkName() {
-            log.debug("Current SSID: '\(ssid.maskedDescription)'")
-        } else {
-            log.debug("Current SSID: none (disconnected from WiFi)")
+        InterfaceObserver.fetchCurrentSSID {
+            if let ssid = $0 {
+                log.debug("Current SSID: '\(ssid.maskedDescription)'")
+            } else {
+                log.debug("Current SSID: none (disconnected from WiFi)")
+            }
         }
     }
 

TunnelKitHost/Info.plist

@@ -15,7 +15,7 @@
 	<key>CFBundlePackageType</key>
 	<string>APPL</string>
 	<key>CFBundleShortVersionString</key>
-	<string>2.3.0</string>
+	<string>3.1.0</string>
 	<key>CFBundleVersion</key>
 	<string>1</string>
 	<key>LSRequiresIPhoneOS</key>

TunnelKitTests-iOS/Info.plist

@@ -15,7 +15,7 @@
 	<key>CFBundlePackageType</key>
 	<string>BNDL</string>
 	<key>CFBundleShortVersionString</key>
-	<string>2.3.0</string>
+	<string>3.1.0</string>
 	<key>CFBundleVersion</key>
 	<string>1</string>
 </dict>

TunnelKitTests-macOS/Info.plist

@@ -15,7 +15,7 @@
 	<key>CFBundlePackageType</key>
 	<string>BNDL</string>
 	<key>CFBundleShortVersionString</key>
-	<string>2.3.0</string>
+	<string>3.1.0</string>
 	<key>CFBundleVersion</key>
 	<string>1</string>
 </dict>