Add import and export logic.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

WireGuard/AppDelegate.swift

@@ -7,6 +7,7 @@
 //
 
 import UIKit
+import os.log
 
 @UIApplicationMain
 class AppDelegate: UIResponder, UIApplicationDelegate {
@@ -22,4 +23,23 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
 
         return true
     }
+
+    func application(_ app: UIApplication, open url: URL, options: [UIApplicationOpenURLOptionsKey: Any] = [:]) -> Bool {
+        defer {
+            do {
+                try FileManager.default.removeItem(at: url)
+            } catch {
+                os_log("Failed to remove item from Inbox: %{public}@", log: Log.general, type: .error, url.absoluteString)
+            }
+        }
+        guard url.pathExtension == "conf" else { return false }
+
+        do {
+            try appCoordinator.importConfig(config: url)
+        } catch {
+            os_log("Unable to import config: %{public}@", log: Log.general, type: .error, url.absoluteString)
+            return false
+        }
+        return true
+    }
 }

WireGuard/Base.lproj/Main.storyboard

@@ -86,7 +86,7 @@
                             <outlet property="delegate" destination="kTU-BV-32R" id="b6T-ZR-cmO"/>
                         </connections>
                     </tableView>
-                    <navigationItem key="navigationItem" title="WireGuard Tunnels" id="j0L-5U-jDs">
+                    <navigationItem key="navigationItem" title="WireGuard Tunnels" largeTitleDisplayMode="always" id="j0L-5U-jDs">
                         <barButtonItem key="rightBarButtonItem" systemItem="add" id="h2H-H8-3Tn">
                             <connections>
                                 <action selector="addProvider:" destination="kTU-BV-32R" id="xSg-ap-3Fx"/>
@@ -486,14 +486,22 @@
                         </connections>
                     </tableView>
                     <navigationItem key="navigationItem" title="Tunnel settings" id="PPu-rX-T38">
-                        <barButtonItem key="rightBarButtonItem" systemItem="save" id="mft-1l-bWa">
-                            <connections>
-                                <action selector="saveTunnelConfiguration:" destination="0VM-73-EPX" id="Hni-0w-hFF"/>
-                            </connections>
-                        </barButtonItem>
+                        <rightBarButtonItems>
+                            <barButtonItem systemItem="save" id="mft-1l-bWa">
+                                <connections>
+                                    <action selector="saveTunnelConfiguration:" destination="0VM-73-EPX" id="Hni-0w-hFF"/>
+                                </connections>
+                            </barButtonItem>
+                            <barButtonItem systemItem="action" id="uim-Mz-omJ">
+                                <connections>
+                                    <action selector="exportTunnel:" destination="0VM-73-EPX" id="oVI-TL-4o9"/>
+                                </connections>
+                            </barButtonItem>
+                        </rightBarButtonItems>
                     </navigationItem>
                     <simulatedNavigationBarMetrics key="simulatedTopBarMetrics" prompted="NO"/>
                     <connections>
+                        <outlet property="exportButton" destination="uim-Mz-omJ" id="1Tq-ie-xo7"/>
                         <outlet property="saveButton" destination="mft-1l-bWa" id="Uif-KZ-isx"/>
                     </connections>
                 </tableViewController>
@@ -524,7 +532,7 @@
                         </constraints>
                         <viewLayoutGuide key="safeArea" id="Soo-c9-MsX"/>
                     </view>
-                    <navigationItem key="navigationItem" title="Scan Code" largeTitleDisplayMode="never" id="WGY-tY-ySz"/>
+                    <navigationItem key="navigationItem" title="Scan Code" largeTitleDisplayMode="always" id="WGY-tY-ySz"/>
                     <simulatedNavigationBarMetrics key="simulatedTopBarMetrics" prompted="NO"/>
                 </viewController>
                 <placeholder placeholderIdentifier="IBFirstResponder" id="TQ2-zp-o40" userLabel="First Responder" sceneMemberID="firstResponder"/>

WireGuard/Coordinators/AppCoordinator.swift

@@ -13,6 +13,10 @@ import os.log
 import CoreData
 import BNRCoreDataStack
 
+enum AppCoordinatorError: Error {
+    case configImportError(msg: String)
+}
+
 extension UINavigationController: Identifyable {}
 
 let APPGROUP = "group.com.wireguard.ios.WireGuard"
@@ -92,6 +96,46 @@ class AppCoordinator: RootViewCoordinator {
         }
     }
 
+    func importConfig(config: URL) throws {
+        do {
+            let configString = try String(contentsOf: config)
+            let addContext = persistentContainer.newBackgroundContext()
+            let tunnel = try Tunnel.fromConfig(configString, context: addContext)
+            let title = config.deletingPathExtension().lastPathComponent
+            tunnel.title = title
+            addContext.saveContext()
+            self.saveTunnel(tunnel)
+        } catch {
+            throw AppCoordinatorError.configImportError(msg: "Failed")
+        }
+
+    }
+
+    func exportConfig(tunnel: Tunnel, barButtonItem: UIBarButtonItem) {
+        let exportString = tunnel.export()
+
+        guard let path = FileManager.default
+            .urls(for: .documentDirectory, in: .userDomainMask).first else {
+                return
+        }
+        let saveFileURL = path.appendingPathComponent("/\(tunnel.title ?? "wireguard").conf")
+        do {
+            try exportString.write(to: saveFileURL, atomically: true, encoding: .utf8)
+        } catch {
+            os_log("Failed to export tunnelto: %{public}@", log: Log.general, type: .error, saveFileURL.absoluteString)
+            return
+        }
+
+        let activityViewController = UIActivityViewController(
+            activityItems: [saveFileURL],
+            applicationActivities: nil)
+        if let popoverPresentationController = activityViewController.popoverPresentationController {
+            popoverPresentationController.barButtonItem = barButtonItem
+        }
+        self.navigationController.present(activityViewController, animated: true) {
+        }
+    }
+
     // MARK: - NEVPNManager handling
 
     @objc private func VPNStatusDidChange(notification: NSNotification) {
@@ -151,7 +195,6 @@ class AppCoordinator: RootViewCoordinator {
 }
 
 extension AppCoordinator: TunnelsTableViewControllerDelegate {
-
     func status(for tunnel: Tunnel, tunnelsTableViewController: TunnelsTableViewController) -> NEVPNStatus {
         let session = self.providerManager(for: tunnel)?.connection as? NETunnelProviderSession
         return session?.status ?? .invalid
@@ -330,6 +373,10 @@ extension AppCoordinator: TunnelsTableViewControllerDelegate {
 }
 
 extension AppCoordinator: TunnelConfigurationTableViewControllerDelegate {
+    func export(tunnel: Tunnel, barButtonItem: UIBarButtonItem) {
+        exportConfig(tunnel: tunnel, barButtonItem: barButtonItem)
+    }
+
     func didSave(tunnel: Tunnel, tunnelConfigurationTableViewController: TunnelConfigurationTableViewController) {
         saveTunnel(tunnel)
     }

WireGuard/Info.plist

@@ -2,10 +2,35 @@
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
-	<key>NSCameraUsageDescription</key>
-	<string>Camera is used to scan QR codes</string>
+    <key>CFBundleDisplayName</key>
+    <string>${PRODUCT_NAME}</string>
 	<key>CFBundleDevelopmentRegion</key>
 	<string>$(DEVELOPMENT_LANGUAGE)</string>
+	<key>CFBundleDocumentTypes</key>
+	<array>
+		<dict>
+			<key>CFBundleTypeExtensions</key>
+			<array>
+				<string></string>
+			</array>
+			<key>CFBundleTypeIconFiles</key>
+			<array>
+				<string>icon_20pt</string>
+				<string>icon_20pt@3x</string>
+				<string>icon_60pt@3x</string>
+			</array>
+			<key>CFBundleTypeName</key>
+			<string>WireGuard configuration</string>
+			<key>CFBundleTypeRole</key>
+			<string>Viewer</string>
+			<key>LSHandlerRank</key>
+			<string>Owner</string>
+			<key>LSItemContentTypes</key>
+			<array>
+				<string>com.wireguard.config.quick</string>
+			</array>
+		</dict>
+	</array>
 	<key>CFBundleExecutable</key>
 	<string>$(EXECUTABLE_NAME)</string>
 	<key>CFBundleIdentifier</key>
@@ -22,6 +47,12 @@
 	<string>auto-generated</string>
 	<key>LSRequiresIPhoneOS</key>
 	<true/>
+	<key>LSSupportsOpeningDocumentsInPlace</key>
+	<false/>
+    <key>UIFileSharingEnabled</key>
+    <true/>
+	<key>NSCameraUsageDescription</key>
+	<string>Camera is used to scan QR codes</string>
 	<key>UILaunchStoryboardName</key>
 	<string>LaunchScreen</string>
 	<key>UIRequiredDeviceCapabilities</key>
@@ -45,5 +76,51 @@
 	</array>
 	<key>UIViewControllerBasedStatusBarAppearance</key>
 	<false/>
+	<key>UTExportedTypeDeclarations</key>
+	<array>
+		<dict>
+			<key>UTTypeTagSpecification</key>
+			<dict>
+				<key>public.filename-extension</key>
+				<string>conf</string>
+			</dict>
+			<key>UTTypeConformsTo</key>
+			<array>
+				<string>public.data</string>
+			</array>
+			<key>UTTypeDescription</key>
+			<string>WireGuard configuration</string>
+			<key>UTTypeIconFiles</key>
+			<array>
+				<string>icon_20pt@3x</string>
+				<string>icon_60pt@3x</string>
+			</array>
+			<key>UTTypeIdentifier</key>
+			<string>com.wireguard.config.quick</string>
+		</dict>
+	</array>
+	<key>UTImportedTypeDeclarations</key>
+	<array>
+		<dict>
+			<key>UTTypeTagSpecification</key>
+			<dict>
+				<key>public.filename-extension</key>
+				<string>conf</string>
+			</dict>
+			<key>UTTypeConformsTo</key>
+			<array>
+				<string>public.data</string>
+			</array>
+			<key>UTTypeDescription</key>
+			<string>WireGuard configuration</string>
+			<key>UTTypeIconFiles</key>
+			<array>
+				<string>icon_20pt@3x</string>
+				<string>icon_60pt@3x</string>
+			</array>
+			<key>UTTypeIdentifier</key>
+			<string>com.wireguard.config.quick</string>
+		</dict>
+	</array>
 </dict>
 </plist>

WireGuard/ViewControllers/TunnelConfigurationTableViewController.swift

@@ -13,11 +13,13 @@ import PromiseKit
 
 protocol TunnelConfigurationTableViewControllerDelegate: class {
     func didSave(tunnel: Tunnel, tunnelConfigurationTableViewController: TunnelConfigurationTableViewController)
+    func export(tunnel: Tunnel, barButtonItem: UIBarButtonItem)
 }
 
 class TunnelConfigurationTableViewController: UITableViewController {
 
     @IBOutlet weak var saveButton: UIBarButtonItem!
+    @IBOutlet weak var exportButton: UIBarButtonItem!
 
     private var viewContext: NSManagedObjectContext!
     private weak var delegate: TunnelConfigurationTableViewControllerDelegate?
@@ -61,6 +63,10 @@ class TunnelConfigurationTableViewController: UITableViewController {
         }
     }
 
+    @IBAction func exportTunnel(_ sender: UIBarButtonItem) {
+        self.delegate?.export(tunnel: tunnel, barButtonItem: sender)
+    }
+
     override func numberOfSections(in tableView: UITableView) -> Int {
         return 3
     }