Start wire-up of logging and tunnel system.

Podfile.lock

@@ -63,4 +63,4 @@ SPEC CHECKSUMS:
 
 PODFILE CHECKSUM: 0d0e9b16451896d624a83e7c8701984fa3e606e0
 
-COCOAPODS: 1.5.2
+COCOAPODS: 1.5.3

WireGuard.xcodeproj/project.pbxproj

@@ -35,6 +35,8 @@
 		4A8AABD820B6A79100B6D8C1 /* UITableView+WireGuard.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4A8AABD720B6A79100B6D8C1 /* UITableView+WireGuard.swift */; };
 		4AD095C820DC4190000E9CF5 /* libwg-go.a in Frameworks */ = {isa = PBXBuildFile; fileRef = 4AD0900120DC4171000E9CF5 /* libwg-go.a */; };
 		4AD095CC20DC42CD000E9CF5 /* WireGuardGoWrapper.m in Sources */ = {isa = PBXBuildFile; fileRef = 4AD095CB20DC42CD000E9CF5 /* WireGuardGoWrapper.m */; };
+		4AEAC32920F14B3B007B67AB /* Log.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4AEAC32820F14B3B007B67AB /* Log.swift */; };
+		4AEAC32B20F14BA9007B67AB /* Log.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4AEAC32A20F14BA9007B67AB /* Log.swift */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXContainerItemProxy section */
@@ -108,6 +110,8 @@
 		4AD095C920DC42CD000E9CF5 /* WireGuardNetworkExtension-Bridging-Header.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = "WireGuardNetworkExtension-Bridging-Header.h"; sourceTree = "<group>"; };
 		4AD095CA20DC42CD000E9CF5 /* WireGuardGoWrapper.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = WireGuardGoWrapper.h; sourceTree = "<group>"; };
 		4AD095CB20DC42CD000E9CF5 /* WireGuardGoWrapper.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = WireGuardGoWrapper.m; sourceTree = "<group>"; };
+		4AEAC32820F14B3B007B67AB /* Log.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Log.swift; sourceTree = "<group>"; };
+		4AEAC32A20F14BA9007B67AB /* Log.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Log.swift; sourceTree = "<group>"; };
 		861983CAE8FDC13BC83E7E04 /* Pods_WireGuard.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; includeInIndex = 0; path = Pods_WireGuard.framework; sourceTree = BUILT_PRODUCTS_DIR; };
 /* End PBXFileReference section */
 
@@ -175,6 +179,7 @@
 				4A4BACEC20B5F1C100F12B28 /* Assets.xcassets */,
 				4A4BACEE20B5F1C100F12B28 /* LaunchScreen.storyboard */,
 				4A4BACF120B5F1C100F12B28 /* Info.plist */,
+				4AEAC32A20F14BA9007B67AB /* Log.swift */,
 			);
 			path = WireGuard;
 			sourceTree = "<group>";
@@ -242,6 +247,7 @@
 				4AD095CA20DC42CD000E9CF5 /* WireGuardGoWrapper.h */,
 				4AD095CB20DC42CD000E9CF5 /* WireGuardGoWrapper.m */,
 				4AD095C920DC42CD000E9CF5 /* WireGuardNetworkExtension-Bridging-Header.h */,
+				4AEAC32820F14B3B007B67AB /* Log.swift */,
 			);
 			path = WireGuardNetworkExtension;
 			sourceTree = "<group>";
@@ -514,6 +520,7 @@
 			files = (
 				4A4BAD0C20B5F6AA00F12B28 /* AppCoordinator.swift in Sources */,
 				4A4BAD2220B6026900F12B28 /* Interface+CoreDataProperties.swift in Sources */,
+				4AEAC32B20F14BA9007B67AB /* Log.swift in Sources */,
 				4A7F6EDE20B674CD00B260B7 /* Address+CoreDataProperties.swift in Sources */,
 				4A4BAD1320B5F82400F12B28 /* Identifyable.swift in Sources */,
 				4A4BAD1720B5F8DE00F12B28 /* WireGuard.xcdatamodeld in Sources */,
@@ -546,6 +553,7 @@
 			files = (
 				4AD095CC20DC42CD000E9CF5 /* WireGuardGoWrapper.m in Sources */,
 				4A61D82920D98CE2006C7A76 /* PacketTunnelProvider.swift in Sources */,
+				4AEAC32920F14B3B007B67AB /* Log.swift in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -791,6 +799,7 @@
 				CODE_SIGN_ENTITLEMENTS = WireGuardNetworkExtension/WireGuardNetworkExtension.entitlements;
 				CODE_SIGN_STYLE = Automatic;
 				DEVELOPMENT_TEAM = 67JZJ7TWU3;
+				ENABLE_BITCODE = NO;
 				INFOPLIST_FILE = WireGuardNetworkExtension/Info.plist;
 				IPHONEOS_DEPLOYMENT_TARGET = 11.4;
 				LD_RUNPATH_SEARCH_PATHS = (
@@ -819,6 +828,7 @@
 				CODE_SIGN_ENTITLEMENTS = WireGuardNetworkExtension/WireGuardNetworkExtension.entitlements;
 				CODE_SIGN_STYLE = Automatic;
 				DEVELOPMENT_TEAM = 67JZJ7TWU3;
+				ENABLE_BITCODE = NO;
 				INFOPLIST_FILE = WireGuardNetworkExtension/Info.plist;
 				IPHONEOS_DEPLOYMENT_TARGET = 11.4;
 				LD_RUNPATH_SEARCH_PATHS = (

WireGuard/Log.swift

@@ -0,0 +1,13 @@
+//
+//  Log.swift
+//  WireGuard
+//
+//  Created by Jeroen Leenarts on 07-07-18.
+//  Copyright © 2018 WireGuard. All rights reserved.
+//
+
+import os.log
+
+struct Log {
+    static var general = OSLog(subsystem: "com.wireguard.ios.WireGuard", category: "general")
+}

WireGuardNetworkExtension/Log.swift

@@ -0,0 +1,13 @@
+//
+//  Log.swift
+//  WireGuardNetworkExtension
+//
+//  Created by Jeroen Leenarts on 07-07-18.
+//  Copyright © 2018 WireGuard. All rights reserved.
+//
+
+import os.log
+
+struct Log {
+    static var general = OSLog(subsystem: "com.wireguard.ios.WireGuard.WireGuardNetworkExtension", category: "general")
+}

WireGuardNetworkExtension/PacketTunnelProvider.swift

@@ -7,16 +7,31 @@
 //
 
 import NetworkExtension
+import os.log
 
 class PacketTunnelProvider: NEPacketTunnelProvider {
+    let wireGuardWrapper = WireGuardGoWrapper()
+
+    private let tunnelQueue = DispatchQueue(label: PacketTunnelProvider.description())
+
+    //TODO create a way to transfer config into extension
 
     override func startTunnel(options: [String: NSObject]?, completionHandler: @escaping (Error?) -> Void) {
+        os_log("Starting tunnel", log: Log.general, type: .info)
         // Add code here to start the process of connecting the tunnel.
 
+        //TODO get a settings string in here.
+        tunnelQueue.sync {
+            wireGuardWrapper.turnOn(withInterfaceName: "TODO", settingsString: "TODO")
+        }
     }
 
     override func stopTunnel(with reason: NEProviderStopReason, completionHandler: @escaping () -> Void) {
+        os_log("Stopping tunnel", log: Log.general, type: .info)
         // Add code here to start the process of stopping the tunnel.
+        tunnelQueue.sync {
+            wireGuardWrapper.turnOff()
+        }
         completionHandler()
     }
 
@@ -27,12 +42,21 @@ class PacketTunnelProvider: NEPacketTunnelProvider {
         }
     }
 
-    override func sleep(completionHandler: @escaping () -> Void) {
+    private func loopReadPackets(_ handler: @escaping ([Data]?, Error?) -> Void) {
-        // Add code here to get ready to sleep.
+        packetFlow.readPackets { [weak self] (_, _) in
-        completionHandler()
+            // TODO write packets into the tunnel
+            self?.loopReadPackets(handler)
+        }
     }
 
-    override func wake() {
+    func writePacket(_ packet: Data, completionHandler: ((Error?) -> Void)?) {
-        // Add code here to wake up.
+        packetFlow.writePackets([packet], withProtocols: [AF_INET] as [NSNumber])
+        completionHandler?(nil)
+    }
+
+    func writePackets(_ packets: [Data], completionHandler: ((Error?) -> Void)?) {
+        let protocols = [Int32](repeating: AF_INET, count: packets.count) as [NSNumber]
+        packetFlow.writePackets(packets, withProtocols: protocols)
+        completionHandler?(nil)
     }
 }

WireGuardNetworkExtension/WireGuardGoWrapper.m

@@ -8,12 +8,17 @@
 
 #import "WireGuardGoWrapper.h"
 
+#include <os/log.h>
 #include "wireguard.h"
 
 /// Trampoline function
 static ssize_t do_read(const void *ctx, const unsigned char *buf, size_t len);
 /// Trampoline function
 static ssize_t do_write(const void *ctx, const unsigned char *buf, size_t len);
+/// Trampoline function
+static void do_log(int level, const char *tag, const char *msg);
+
+
 
 @interface WireGuardGoWrapper ()
 
@@ -26,6 +31,9 @@ static ssize_t do_write(const void *ctx, const unsigned char *buf, size_t len);
 
 - (void) turnOnWithInterfaceName: (NSString *)interfaceName settingsString: (NSString *)settingsString
 {
+
+    wgSetLogger(do_log);
+
     const char * ifName = [interfaceName UTF8String];
     const char * settings = [settingsString UTF8String];
 
@@ -38,6 +46,16 @@ static ssize_t do_write(const void *ctx, const unsigned char *buf, size_t len);
     wgTurnOff(self.handle);
 }
 
++ (os_log_t)log {
+    static os_log_t subLog = nil;
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        subLog = os_log_create("com.wireguard.ios.WireGuard.WireGuardNetworkExtension", "WireGuard-Go");
+    });
+
+    return subLog;
+}
+
 @end
 
 static ssize_t do_read(const void *ctx, const unsigned char *buf, size_t len)
@@ -45,6 +63,7 @@ static ssize_t do_read(const void *ctx, const unsigned char *buf, size_t len)
     WireGuardGoWrapper *wrapper = (__bridge WireGuardGoWrapper *)ctx;
     printf("Reading from instance with ctx %p into buffer %p of length %zu\n", ctx, buf, len);
     sleep(1);
+    // TODO received data from tunnel, write to Packetflow
     return wrapper.isClosed ? -1 : 0;
 }
 
@@ -54,3 +73,9 @@ static ssize_t do_write(const void *ctx, const unsigned char *buf, size_t len)
     printf("Writing from instance with ctx %p into buffer %p of length %zu\n", ctx, buf, len);
     return len;
 }
+
+static void do_log(int level, const char *tag, const char *msg)
+{
+    // TODO Get some details on the log level and distribute to matching log levels.
+    os_log([WireGuardGoWrapper log], "Log level %d for %s: %s", level, tag, msg);
+}