Swift 4.1 + iOS 11 (SFAuthenticationSession)

Simplicity.xcodeproj/project.pbxproj

@@ -151,12 +151,12 @@
 		DF74EC271CE2A8BB008F16BF /* Project object */ = {
 			isa = PBXProject;
 			attributes = {
-				LastUpgradeCheck = 0800;
+				LastUpgradeCheck = 0930;
 				ORGANIZATIONNAME = Stormpath;
 				TargetAttributes = {
 					DF74EC2F1CE2A8BB008F16BF = {
 						CreatedOnToolsVersion = 7.3.1;
-						LastSwiftMigration = 0800;
+						LastSwiftMigration = 0930;
 					};
 				};
 			};
@@ -165,6 +165,7 @@
 			developmentRegion = English;
 			hasScannedForEncodings = 0;
 			knownRegions = (
+				English,
 				en,
 			);
 			mainGroup = DF74EC261CE2A8BB008F16BF;
@@ -218,14 +219,22 @@
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
 				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
 				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;
+				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
 				CLANG_WARN_EMPTY_BODY = YES;
 				CLANG_WARN_ENUM_CONVERSION = YES;
 				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
@@ -270,14 +279,22 @@
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
 				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
 				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;
+				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
 				CLANG_WARN_EMPTY_BODY = YES;
 				CLANG_WARN_ENUM_CONVERSION = YES;
 				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
@@ -324,7 +341,8 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 3.0;
+				SWIFT_SWIFT3_OBJC_INFERENCE = Default;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Debug;
 		};
@@ -344,7 +362,8 @@
 				PRODUCT_BUNDLE_IDENTIFIER = com.stormpath.Simplicity;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
-				SWIFT_VERSION = 3.0;
+				SWIFT_SWIFT3_OBJC_INFERENCE = Default;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Release;
 		};

Simplicity.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>

Simplicity.xcodeproj/xcshareddata/xcschemes/Simplicity.xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "0800"
+   LastUpgradeVersion = "0930"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"

Simplicity/Helpers.swift

@@ -18,14 +18,20 @@ class Helpers {
      - returns: A list of URL Schemes that match the filter closure.
      */
     static func registeredURLSchemes(filter closure: (String) -> Bool) -> [String] {
+        // Retrieve url types from the main bundle
         guard let urlTypes = Bundle.main.infoDictionary?["CFBundleURLTypes"] as? [[String: AnyObject]] else {
             return [String]()
         }
 
         // Convert the complex dictionary into an array of URL schemes
-        let urlSchemes = urlTypes.flatMap({($0["CFBundleURLSchemes"] as? [String])?.first })
+        let urlSchemes: [String] = urlTypes.reduce(into: []) { (result, component) in
+            if let schemes = component["CFBundleURLSchemes"] as? [String] {
+                result.append(contentsOf: schemes)
+            }
+        }
 
-        return urlSchemes.flatMap({closure($0) ? $0 : nil})
+        // Filter schemes with parameter block
+        return urlSchemes.compactMap({closure($0) ? $0 : nil})
     }
 
     /**
@@ -36,7 +42,7 @@ class Helpers {
      - returns: A query string
      */
     static func queryString(_ parts: [String: String?]) -> String? {
-        return parts.flatMap { key, value -> String? in
+        return parts.compactMap { key, value -> String? in
             if let value = value {
                 return key + "=" + value
             } else {

Simplicity/LoginProviders/Facebook.swift

@@ -38,7 +38,12 @@ public class Facebook: OAuth2 {
     /// An array with query string parameters for the authorization URL.
     override public var authorizationURLParameters: [String : String?] {
         var result = super.authorizationURLParameters
+        // Required parameters to have the button to connect via the native fb app
         result["auth_type"] = authType.rawValue
+        result["display"] = "touch"
+        result["sdk"] = "ios"
+        result["fbapp_pres"] = "1"
+        result["sdk_version"] = "4.31.1"
         return result
     }
 
@@ -53,7 +58,7 @@ public class Facebook: OAuth2 {
             let range = urlScheme.range(of: "\\d+", options: .regularExpression) else {
                 preconditionFailure("You must configure your Facebook URL Scheme to use Facebook login.")
         }
-        let clientId = urlScheme.substring(with: range)
+        let clientId = String(urlScheme[range.lowerBound..<range.upperBound])
         let authorizationEndpoint = URL(string: "https://www.facebook.com/dialog/oauth")!
         let redirectEndpoint = URL(string: urlScheme + "://authorize")!
 

Simplicity/LoginProviders/VKontakte.swift

@@ -33,7 +33,7 @@ public class VKontakte: OAuth2 {
             let range = urlScheme.range(of: "\\d+", options: .regularExpression) else {
                 preconditionFailure("You must configure your VK URL Scheme to use VK login.")
         }
-        let clientId = urlScheme.substring(with: range)
+        let clientId = String(urlScheme[range.lowerBound..<range.upperBound])
         let authorizationEndpoint = URL(string: "https://oauth.vk.com/authorize")!
         let redirectEndpoint = URL(string: urlScheme + "://authorize")!
 

Simplicity/OAuth2.swift

@@ -64,7 +64,7 @@ public class OAuth2: LoginProvider {
 
         var url = URLComponents(url: authorizationEndpoint, resolvingAgainstBaseURL: false)!
 
-        url.queryItems = authorizationURLParameters.flatMap({key, value -> URLQueryItem? in
+        url.queryItems = authorizationURLParameters.compactMap({key, value -> URLQueryItem? in
             return value != nil ? URLQueryItem(name: key, value: value) : nil
         })
 

Simplicity/Simplicity.swift

@@ -12,43 +12,61 @@ import SafariServices
 /// Callback handler after an external login completes.
 public typealias ExternalLoginCallback = (String?, NSError?) -> Void
 
-/** 
+/**
  Simplicity is a framework for authenticating with external providers on iOS.
  */
 public final class Simplicity {
     private static var currentLoginProvider: LoginProvider?
     private static var callback: ExternalLoginCallback?
     private static var safari: UIViewController?
+    @available(iOS 11.0, *)
+    private static var authSession: SFAuthenticationSession?
 
     /**
      Begin the login flow by redirecting to the LoginProvider's website.
 
      - parameters:
-       - loginProvider: The login provider object configured to be used.
-       - callback: A callback with the access token, or a SimplicityError.
+     - loginProvider: The login provider object configured to be used.
+     - callback: A callback with the access token, or a SimplicityError.
      */
     public static func login(_ loginProvider: LoginProvider, callback: @escaping ExternalLoginCallback) {
         self.currentLoginProvider = loginProvider
         self.callback = callback
 
-        presentSafariView(loginProvider.authorizationURL)
+        if #available(iOS 11, *) {
+            if self.presentAuthentificationSession(url: loginProvider.authorizationURL, callbackURL: loginProvider.urlScheme) == false {
+                self.presentSafariView(loginProvider.authorizationURL)
+            }
+        } else {
+            self.presentSafariView(loginProvider.authorizationURL)
+        }
     }
 
     /// Deep link handler (iOS9)
-    public static func application(_ app: UIApplication, open url: URL, options: [UIApplicationOpenURLOptionsKey: Any]) -> Bool {
-        safari?.dismiss(animated: true, completion: nil)
-        guard let callback = callback, url.scheme == currentLoginProvider?.urlScheme else {
-            return false
+    public static func application(_ app: UIApplication, open url: URL, options: [UIApplication.OpenURLOptionsKey: Any]) -> Bool {
+        if let safari = self.safari {
+            safari.dismiss(animated: true, completion: nil)
+            self.safari = nil
         }
-        currentLoginProvider?.linkHandler(url, callback: callback)
-        currentLoginProvider = nil
+        if #available(iOS 11.0, *) {
+            if let auth = self.authSession {
+                auth.cancel()
+                self.authSession = nil
+            }
+        }
+        guard let callback = self.callback,
+            let currentLoginProvider = self.currentLoginProvider,
+            url.scheme == currentLoginProvider.urlScheme
+            else { return false }
+        currentLoginProvider.linkHandler(url, callback: callback)
+        self.currentLoginProvider = nil
 
         return true
     }
 
     /// Deep link handler (<iOS9)
     public static func application(_ application: UIApplication, open url: URL, sourceApplication: String?, annotation: Any) -> Bool {
-        return self.application(application, open: url, options: [UIApplicationOpenURLOptionsKey: Any]())
+        return self.application(application, open: url, options: [UIApplication.OpenURLOptionsKey: Any]())
     }
 
     private static func presentSafariView(_ url: URL) {
@@ -63,4 +81,18 @@ public final class Simplicity {
             UIApplication.shared.openURL(url)
         }
     }
+
+    @available(iOS 11.0, *)
+    private static func presentAuthentificationSession(url: URL, callbackURL: String) -> Bool {
+
+        let session = SFAuthenticationSession(url: url, callbackURLScheme: nil) { (url, error) in
+            self.authSession = nil
+            if let url = url {
+                _ = self.application(UIApplication.shared, open: url, options: [:])
+            }
+        }
+        self.authSession = session
+        return session.start()
+
+    }
 }