Move logic to extension: NETunnelProviderProtocol extension code should be shared

Signed-off-by: Roopesh Chander <roop@roopc.net>

WireGuard/Shared/NETunnelProviderProtocol+Extension.swift

@@ -0,0 +1,35 @@
+// SPDX-License-Identifier: MIT
+// Copyright © 2018 WireGuard LLC. All Rights Reserved.
+
+import NetworkExtension
+
+extension NETunnelProviderProtocol {
+    convenience init?(tunnelConfiguration: TunnelConfiguration) {
+        assert(!tunnelConfiguration.interface.name.isEmpty)
+        guard let serializedTunnelConfiguration = try? JSONEncoder().encode(tunnelConfiguration) else { return nil }
+
+        self.init()
+
+        let appId = Bundle.main.bundleIdentifier!
+        providerBundleIdentifier = "\(appId).network-extension"
+        providerConfiguration = [
+            "tunnelConfiguration": serializedTunnelConfiguration,
+            "tunnelConfigurationVersion": 1
+        ]
+
+        let endpoints = tunnelConfiguration.peers.compactMap({$0.endpoint})
+        if endpoints.count == 1 {
+            serverAddress = endpoints.first!.stringRepresentation()
+        } else if endpoints.isEmpty {
+            serverAddress = "Unspecified"
+        } else {
+            serverAddress = "Multiple endpoints"
+        }
+        username = tunnelConfiguration.interface.name
+    }
+
+    func tunnelConfiguration() -> TunnelConfiguration? {
+        guard let serializedTunnelConfiguration = providerConfiguration?["tunnelConfiguration"] as? Data else { return nil }
+        return try? JSONDecoder().decode(TunnelConfiguration.self, from: serializedTunnelConfiguration)
+    }
+}

WireGuard/WireGuard.xcodeproj/project.pbxproj

@@ -48,6 +48,8 @@
 		6FFA5D902194370D0001E2F7 /* Endpoint.swift in Sources */ = {isa = PBXBuildFile; fileRef = 6F693A552179E556008551C1 /* Endpoint.swift */; };
 		6FFA5D912194370D0001E2F7 /* DNSServer.swift in Sources */ = {isa = PBXBuildFile; fileRef = 6F628C3E217F3413003482A3 /* DNSServer.swift */; };
 		6FFA5D9321943BC90001E2F7 /* DNSResolver.swift in Sources */ = {isa = PBXBuildFile; fileRef = 6F5D0C1421832391000F85AD /* DNSResolver.swift */; };
+		6FFA5D952194454A0001E2F7 /* NETunnelProviderProtocol+Extension.swift in Sources */ = {isa = PBXBuildFile; fileRef = 6FFA5D942194454A0001E2F7 /* NETunnelProviderProtocol+Extension.swift */; };
+		6FFA5D96219446380001E2F7 /* NETunnelProviderProtocol+Extension.swift in Sources */ = {isa = PBXBuildFile; fileRef = 6FFA5D942194454A0001E2F7 /* NETunnelProviderProtocol+Extension.swift */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXContainerItemProxy section */
@@ -131,6 +133,7 @@
 		6FF4AC2B211EC776002C96EB /* Config.xcconfig */ = {isa = PBXFileReference; lastKnownFileType = text.xcconfig; name = Config.xcconfig; path = Config/Config.xcconfig; sourceTree = "<group>"; };
 		6FF4AC462120B9E0002C96EB /* NetworkExtension.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = NetworkExtension.framework; path = System/Library/Frameworks/NetworkExtension.framework; sourceTree = SDKROOT; };
 		6FF4AC482120B9E0002C96EB /* WireGuard.entitlements */ = {isa = PBXFileReference; lastKnownFileType = text.plist.entitlements; path = WireGuard.entitlements; sourceTree = "<group>"; };
+		6FFA5D942194454A0001E2F7 /* NETunnelProviderProtocol+Extension.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "NETunnelProviderProtocol+Extension.swift"; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -170,6 +173,7 @@
 			children = (
 				6F7774E6217201E0006A79B3 /* Model */,
 				6F5D0C442183BCDA000F85AD /* PacketTunnelOptionKey.swift */,
+				6FFA5D942194454A0001E2F7 /* NETunnelProviderProtocol+Extension.swift */,
 			);
 			path = Shared;
 			sourceTree = "<group>";
@@ -491,6 +495,7 @@
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				6FFA5D96219446380001E2F7 /* NETunnelProviderProtocol+Extension.swift in Sources */,
 				6FFA5D8E2194370D0001E2F7 /* Configuration.swift in Sources */,
 				6FFA5D8F2194370D0001E2F7 /* IPAddressRange.swift in Sources */,
 				6FFA5D902194370D0001E2F7 /* Endpoint.swift in Sources */,
@@ -513,6 +518,7 @@
 				6F693A562179E556008551C1 /* Endpoint.swift in Sources */,
 				6F0068572191AFD200419BE9 /* ScrollableLabel.swift in Sources */,
 				6FDEF7E62185EFB200D8FBF6 /* QRScanViewController.swift in Sources */,
+				6FFA5D952194454A0001E2F7 /* NETunnelProviderProtocol+Extension.swift in Sources */,
 				6F6899A62180447E0012E523 /* x25519.c in Sources */,
 				6F5D0C452183BCDA000F85AD /* PacketTunnelOptionKey.swift in Sources */,
 				6F7774E2217181B1006A79B3 /* AppDelegate.swift in Sources */,

WireGuard/WireGuard/VPN/TunnelsManager.swift

@@ -210,37 +210,6 @@ class TunnelsManager {
     }
 }
 
-extension NETunnelProviderProtocol {
-    convenience init?(tunnelConfiguration: TunnelConfiguration) {
-        assert(!tunnelConfiguration.interface.name.isEmpty)
-        guard let serializedTunnelConfiguration = try? JSONEncoder().encode(tunnelConfiguration) else { return nil }
-
-        self.init()
-
-        let appId = Bundle.main.bundleIdentifier!
-        providerBundleIdentifier = "\(appId).network-extension"
-        providerConfiguration = [
-            "tunnelConfiguration": serializedTunnelConfiguration,
-            "tunnelConfigurationVersion": 1
-        ]
-
-        let endpoints = tunnelConfiguration.peers.compactMap({$0.endpoint})
-        if endpoints.count == 1 {
-            serverAddress = endpoints.first!.stringRepresentation()
-        } else if endpoints.isEmpty {
-            serverAddress = "Unspecified"
-        } else {
-            serverAddress = "Multiple endpoints"
-        }
-        username = tunnelConfiguration.interface.name
-    }
-
-    func tunnelConfiguration() -> TunnelConfiguration? {
-        guard let serializedTunnelConfiguration = providerConfiguration?["tunnelConfiguration"] as? Data else { return nil }
-        return try? JSONDecoder().decode(TunnelConfiguration.self, from: serializedTunnelConfiguration)
-    }
-}
-
 class TunnelContainer: NSObject {
     @objc dynamic var name: String
     @objc dynamic var status: TunnelStatus