Parse SS URL with much cleaner URL struct methods

ShadowsocksX-NG/Utils.swift

@@ -8,14 +8,12 @@
 
 import Foundation
 
-
 extension String {
     var localized: String {
         return NSLocalizedString(self, tableName: nil, bundle: Bundle.main, value: "", comment: "")
     }
 }
 
-
 extension Data {
     func sha1() -> String {
         let data = self
@@ -25,3 +23,36 @@ extension Data {
         return hexBytes.joined(separator: "")
     }
 }
+
+func ParseSSURL(_ url: URL?) -> [String: Any?]? {
+
+    func padBase64(string: String) -> String {
+        var length = string.characters.count
+        length = 4 - length % 4 + length
+        return string.padding(toLength: length, withPad: "=", startingAt: 0)
+    }
+
+    if url?.host == nil {
+        return nil
+    }
+
+    var plainUrl: URL! = url
+
+    let data = Data(base64Encoded: padBase64(string: url!.host!),
+                    options: Data.Base64DecodingOptions())
+
+    if data != nil {
+        let decoded = String(data: data!, encoding: String.Encoding.utf8)
+        plainUrl = URL(string: "ss://\(decoded!)")
+
+        if plainUrl == nil {
+            return nil
+        }
+    }
+
+    return ["ServerHost": plainUrl.host,
+            "ServerPort": UInt16(plainUrl.port!),
+            "Method": plainUrl.user,
+            "Password": plainUrl.password,
+    ]
+}