ios - 添加的网站未被内容拦截器拦截

Question

您好，我正在编写一个简单的内容拦截器应用程序。在这个应用程序中，我想允许用户添加一个他想阻止并阻止它的网站，但由于某些原因，我的内容阻止程序不会阻止新添加的网站。我使用 SFContentBlockerManager.reloadContentBlocker(withIdentifier: blockerIdentifier) 它打印成功但由于某些原因它不起作用。

import UIKit
import Cartography
import SwiftyJSON
import SafariServices

protocol MyProtocol{
  func DeleteSite(num:Int)
}


class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSource, MyProtocol {
var tableView: UITableView = UITableView()
var arr = [String]()
func DeleteSite(num: Int) {

    if let path = Bundle.main.path(forResource: "blockerList", ofType: "json"){
        guard let data = NSData(contentsOf: URL(fileURLWithPath: path)) else{
            return
        }
  //      JSON(data: data as Data)[num] = nil
        var jsonObj = JSON(data: data as Data)
     //   jsonObj.arrayObject?.remove(at: num)
        print(jsonObj)
        if jsonObj != JSON.null {
           // jsonObj.arrayObject[num] =
            jsonObj[num] = nil
           //  print("Hello I do work here \(jsonObj.arrayValue.remove(at: num))")
            tableView.reloadData()
           // jsonObj.arrayObject?.remove(at: num)

        } else {
            print("Could not get json from file, make sure that file contains valid json.")
        }
    }

}


override func viewDidLoad() {
    super.viewDidLoad()
    let blockerIdentifier = "saltaim.SelfControl2.blocker"
    SFContentBlockerManager.reloadContentBlocker(withIdentifier: blockerIdentifier) {error in
        if error == nil {
            print("Success")
        } else {
            print("----------------------------------------------")
            print(error)
            print("----------------------------------------------")

        }
    }

    super.view.backgroundColor = UIColor.red;

    //let blockerIdentifier = "com.appsfoundation.ContentBlocker.Blocker"
    //SFContentBlockerManager.
    // print("--------------------")
    //print(FileManager.default.c)
    //Bundle(for: ContentBlockerRequestHandler)
    //print(Bundle.main.path(forResource: "blocker/blockerList", ofType: "json"))
    //print(Bundle.main.path(forResource: "blockerList", ofType: "json"))

    //print("--------------------")
    //Bundle.main.url
    //Bundle.main.pa
    //FileManager.default.containerURL(forSecurityApplicationGroupIdentifier: <#T##String#>)
    // print(Bundle.main.url(forResource: "blocker/blockerList", withExtension: "json"))
    // Bundle.init(for: ContentBlockerRequestHandler)
    // print(Bundle.main.paths(forResourcesOfType: "blockerList.json", inDirectory: "blocker"))
    tableView.register(MyTableViewCell.self, forCellReuseIdentifier: "cell")

    if let path = Bundle.main.path(forResource: "blockerList", ofType: "json"){
        guard let data = NSData(contentsOf: URL(fileURLWithPath: path)) else{
            return
        }
        let jsonObj = JSON(data: data as Data)
        print(jsonObj)
        if jsonObj != JSON.null {
            // print("Hello I do work here \(jsonObj["trigger"])")
            guard let arr1 = jsonObj.array else{
                return;
            }
            var count = arr1.count;
            for index in 0...count-1{
                //print("-------")
                // print(jsonObj[index]["trigger"]["url-filter"].stringValue)
                arr.append(jsonObj[index]["trigger"]["url-filter"].stringValue);


            }
            //for

        } else {
            print("Could not get json from file, make sure that file contains valid json.")
        }
        //


    }
    // arr.append("Hello")
    // arr.append("my name is ")
    let button = UIButton();
    button.setTitle("+", for: .normal)
    button.addTarget(self, action: #selector(buttonPressed), for: .touchUpInside)
    // button.titleLabel?.text = "+"

    self.view.addSubview(tableView)
    self.view.addSubview(button)
    tableView.delegate = self
    tableView.dataSource = self
    constrain(tableView, view, button){
        tableView, view, button in
        tableView.width == view.width
        tableView.height == view.height - 50
        tableView.top == view.top
        tableView.right == view.right
        button.height == 50
        button.width == view.width
        button.top == view.bottom - 50
        button.right == view.right

    }
    //arr = Array()
    // Do any additional setup after loading the view, typically from a nib.
    // self.view.backgroundColor = UIColor.redColor();
}
func buttonPressed(){
    // print("I was pressed")
    //var alert = UIAlertView();
    //alert.title = "Enter a website";
    // alert.alertViewStyle = UIAlertViewStyle.plainTextInput
    // alert.addB
    //alert.addButton(withTitle: "Done")
    //alert.addButton(withTitle: "Cancel")
    var s:String?
    var alert = UIAlertController(title: "Alert", message: "Enter website that you would like to block", preferredStyle: UIAlertControllerStyle.alert)

    alert.addTextField { (text) in
        text.placeholder = "http://";
        s=text.text
    }
    let action = UIAlertAction(title: "Done", style: UIAlertActionStyle.default) { (action: UIAlertAction) in
        guard let s = alert.textFields?[0].text else{
            return
        }

        //var c = ["action":["type": "block"], "trigger":["url-filter":s]];
        //print(c)
        let path = Bundle.main.path(forResource: "blockerList", ofType: "json")!
        var readString = "" // Used to store the file contents
        do {
            // Read the file contents
            readString = try String.init(contentsOf: URL(fileURLWithPath: path))
            //readString = fileURL.absoluteString
            // readString = try String(contentsOfURL: fileURL)
        } catch let error as NSError {
            print("Failed reading from URL: \(URL(fileURLWithPath: path)), Error: " + error.localizedDescription)
        }
       // var size = (readString.characters.count - 1)
        //print("The end index is \(readString.endIndex)")
        print("------------------------")
        readString = readString.replacingOccurrences(of: "]", with: "")
      //  print(readString.endIndex)
       // readString = String(readString.characters.dropLast())
        print(readString)
        print("--------------------------")
       // readString.remove(at: readString.endIndex)
       // readString = readString.substring(to: readString.index(before: readString.endIndex))
        readString += ",{\"action\":{\"type\":\"block\"},\"trigger\":{\"url-filter\":\"" + s+"\"}}]"
        print("File Text: \(readString)")
  //      let fileName = "blockerList"
      //  let DocumentDirURL = try! FileManager.default.url(for: ., in: .userDomainMask, appropriateFor: nil, create: true)
     //   let fileURL = DocumentDirURL.appendingPathComponent(fileName).appendingPathExtension("json")
        print("FilePath: \(path)")
        let fileHandler = try! FileHandle(forWritingTo: URL(fileURLWithPath: path))
        //fileHandler.
        //fileHandler.seekToEndOfFile()
        fileHandler.write(readString.data(using: String.Encoding.utf8, allowLossyConversion: false)!)

       // fileHandler.write("Hello".data(using: String.Encoding.utf8, allowLossyConversion: false)!)
       // fileHandler.write(c.description.data(using: String.Encoding.utf8, allowLossyConversion: false)!)
        fileHandler.closeFile()
        var readString1 = "" // Used to store the file contents
        do {
            // Read the file contents
            readString1 = try String.init(contentsOf: URL(fileURLWithPath: path))
            //readString = fileURL.absoluteString
            // readString = try String(contentsOfURL: fileURL)
        } catch let error as NSError {
            print("Failed reading from URL: \(URL(fileURLWithPath: path)), Error: " + error.localizedDescription)
        }
        print("File Text: \(readString1)")
        let blockerIdentifier = "saltaim.SelfControl2.blocker"
        SFContentBlockerManager.reloadContentBlocker(withIdentifier: blockerIdentifier) {error in
            if error == nil {
                print("Success")
            } else {
                print("----------------------------------------------")
                print(error)
                print("----------------------------------------------")

            }
        }



    }
    let action2 = UIAlertAction(title: "Cancel", style: UIAlertActionStyle.cancel) { (UIAlertAction) in
        self.dismiss(animated: true, completion: nil)
    }
    alert.addAction(action)
    alert.addAction(action2)
    self.present(alert, animated: true, completion: nil)
    //self.viewC
    //presentedViewController(alert)
    //alert.addA
    // alert.show()
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()

    // Dispose of any resources that can be recreated.
}
func numberOfSections(in tableView: UITableView) -> Int {
    return 1
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int
{
    return arr.count

}

func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat
{
    return 50
}

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell
{
    // Code here
    // let cell = UITableViewCell(style: UITableViewCellStyle.default, reuseIdentifier: "cell")
    var site = arr[(indexPath as NSIndexPath).item]
    let cell = MyTableViewCell(num: (indexPath as NSIndexPath).item,site: site, style: UITableViewCellStyle.default, reuseIdentifier: "cell")
    cell.delegate = self;
    // let cell = MyTableViewCell(style: UITableViewCellStyle.default, reuseIdentifier: "cell")
    // cell.site = arr[(indexPath as NSIndexPath).item]

    // let cell1 = MyTableViewCell();

    // let cell = MyTableV
    //cell.t
    //let cell1 = tableView.dequeueReusableCell(withIdentifier: "cell")
    //cell.textLabel?.text = "Hello"
    //cell.textLabel?.text = arr[(indexPath as NSIndexPath).item]
    return cell;
}


 }

Answer 1

我在编写自己的内容拦截器时遇到了类似的问题。当您创建内容拦截器扩展程序时，您还创建了一个扩展程序从中读取的 json 文件。现在，重要的部分是扩展只从位于扩展包目录中的文件中读取。

据我所知，您正在写入主应用程序包中的 json 文件，然后重新加载内容拦截器。所以内容拦截器只是简单地查看它自己目录中的文件(同样，与主包目录分开)并加载该 json 文件。

要解决此问题，您需要将文件更改实际写入位于扩展包目录中的 json 文件。

这是一个例子:

let groupUrl: NSURL = fileManager.containerURLForSecurityApplicationGroupIdentifier("group.com.mygroup")!

if let path = NSURL(string: "blockerList.json", relativeToURL: groupUrl) {
    // write your json data to the path here
    SFContentBlockerManager.reloadContentBlockerWithIdentifier("com.my.extension.identifier", completionHandler: nil)
}

另一件需要注意的重要事情是，您必须请求特殊权限才能从扩展包中读取和写入。