使用Swift 3獲取Mac上的首選wifi網絡列表

Question

有沒有辦法在MacOS上使用Swift 3.0獲得首選（=保存的）wifi的ssid列表？

我發現了一些不推薦使用的例子，並且（令人驚訝的是）只能在iOS上運行。

Answer 1

首選網絡被存儲在作爲plist中系統偏好NSUserDefaults的一部分。雖然我沒有看到一個API來直接訪問這些名字，你可以使用defaults shell命令或NSTask訪問值：

defaults read /Library/Preferences/SystemConfiguration/com.apple.airport.preferences | grep SSIDString 

注意，在這份名單僅僅是不是所有的的SSID的計算機已連接到，但列表與任何啓用iCloud的設備同步。

相關討論在這裏：OS X Daily - See a List of All Wi-Fi Networks a Mac Has Previously Connected To

Answer 2

它可能不是最漂亮的代碼以往，但在雨燕3.0的作品。

func shell(arguments: [String] = []) -> (String? , Int32) { 
    let task = Process() 
    task.launchPath = "/bin/bash" 
    task.arguments = arguments 

    let pipe = Pipe() 
    task.standardOutput = pipe 
    task.standardError = pipe 
    task.launch() 
    let data = pipe.fileHandleForReading.readDataToEndOfFile() 
    let output = String(data: data, encoding: .utf8) 
    let terminationStatus = task.terminationStatus 
    return (output, terminationStatus) 
} 

擴展：

extension String { 
    func stringByReplacingFirstOccurrenceOfString(
     target: String, withString replaceString: String) -> String 
    { 
     if let range = self.range(of: target) { 
      return self.replacingCharacters(in: range, with: replaceString) 
     } 
     return self 
    } 
} 

extension String { 
    func stringByReplacingLastOccurrenceOfString(
     target: String, withString replaceString: String) -> String 
    { 
     if let range = self.range(of: target, options: String.CompareOptions.backwards) { 
      return self.replacingCharacters(in: range, with: replaceString) 
     } 
     return self 
    } 
} 

獲取和清潔的WiFi的SSID的

let (output, terminationStatus) = shell(arguments: ["-c", "defaults read /Library/Preferences/SystemConfiguration/com.apple.airport.preferences | grep SSIDString"]) 
    if (terminationStatus == 0) { 
     let arrayOfWifi = output?.components(separatedBy: CharacterSet.newlines) 

     for var aWifi in arrayOfWifi! { 
      aWifi = aWifi.trimmingCharacters(in: CharacterSet.whitespacesAndNewlines) 
      if (aWifi.hasPrefix("SSIDString = ")) { 
       aWifi = aWifi.stringByReplacingFirstOccurrenceOfString(target: "SSIDString = ", withString: "") 
      } 
      if (aWifi.hasPrefix("\"")) { 
       aWifi = aWifi.stringByReplacingFirstOccurrenceOfString(target: "\"", withString: "") 
      } 
      if (aWifi.hasSuffix("\";")) { 
       aWifi = aWifi.stringByReplacingLastOccurrenceOfString(target: "\";", withString: "") 
      } 
      if (aWifi.hasSuffix(";")) { 
       aWifi = aWifi.stringByReplacingLastOccurrenceOfString(target: ";", withString: "") 
      } 
      aWifi = aWifi.trimmingCharacters(in: CharacterSet.whitespacesAndNewlines) 
      print(aWifi) 
     } 
    } 
}