Generates SIP002 QR code

ShadowsocksX-NG/AppDelegate.swift

@@ -241,6 +241,7 @@ class AppDelegate: NSObject, NSApplicationDelegate, NSUserNotificationCenterDele
                 }
                 qrcodeWinCtrl = SWBQRCodeWindowController(windowNibName: "SWBQRCodeWindowController")
                 qrcodeWinCtrl.qrCode = profile.URL()!.absoluteString
+                qrcodeWinCtrl.legacyQRCode = profile.URL(legacy: true)!.absoluteString
                 qrcodeWinCtrl.title = profile.title()
                 qrcodeWinCtrl.showWindow(self)
                 NSApp.activate(ignoringOtherApps: true)

ShadowsocksX-NG/SWBQRCodeWindowController.h

@@ -11,6 +11,7 @@
 
 @interface SWBQRCodeWindowController : NSWindowController
 
+@property (nonatomic, copy) NSString *legacyQRCode;
 @property (nonatomic, copy) NSString *qrCode;
 @property (nonatomic, copy) NSString *title;
 

ShadowsocksX-NG/SWBQRCodeWindowController.m

@@ -78,4 +78,13 @@
     [pasteboard writeObjects:copiedObjects];
 }
 
+- (void)flagsChanged:(NSEvent *)event {
+    NSUInteger modifiers = event.modifierFlags & NSDeviceIndependentModifierFlagsMask;
+    if (modifiers & NSAlternateKeyMask) {
+        [self setQRCode:self.legacyQRCode];
+    } else {
+        [self setQRCode:self.qrCode];
+    }
+}
+
 @end

ShadowsocksX-NG/ServerProfile.swift

@@ -246,7 +246,7 @@ class ServerProfile: NSObject, NSCopying {
         return true
     }
 
-    func URL() -> Foundation.URL? {
+    private func makeLegacyURL() -> URL? {
         var url = URLComponents()
 
         url.host = serverHost
@@ -275,6 +275,38 @@ class ServerProfile: NSObject, NSCopying {
         }
         return nil
     }
+
+    func URL(legacy: Bool = false) -> URL? {
+        // If you want the URL from <= 1.5.1
+        if (legacy) {
+            return self.makeLegacyURL()
+        }
+
+        guard let rawUserInfo = "\(method):\(password)".data(using: .utf8) else {
+            return nil
+        }
+        let paddings = CharacterSet(charactersIn: "=")
+        let userInfo = rawUserInfo.base64EncodedString().trimmingCharacters(in: paddings)
+
+        var items = [URLQueryItem(name: "OTA", value: ota.description)]
+        if enabledKcptun {
+            items.append(URLQueryItem(name: "Kcptun", value: enabledKcptun.description))
+            items.append(contentsOf: kcptunProfile.urlQueryItems())
+        }
+
+        var comps = URLComponents()
+
+        comps.scheme = "ss"
+        comps.host = serverHost
+        comps.port = Int(serverPort)
+        comps.user = userInfo
+        comps.fragment = remark
+        comps.queryItems = items
+
+        let url = try? comps.asURL()
+
+        return url
+    }
     
     func title() -> String {
         if remark.isEmpty {