Safari应用程序扩展:在HTTPS页面上加载HTML文件

Question

我正在开发一个Safari应用程序扩展(因为Safari扩展现在被正式否决了)，我想通过JS将一些HTML注入到页面中。但是当我向我的safari-extension:// URL发出请求时，请求是在没有SSL的情况下发出的，而Safari当前阻止混合内容，并且不允许任何改变策略的方法。所以我有两个问题。

1. 对于我的开发环境，我如何绕过这个问题呢？
2. 我在注释这里中看到，生产打包扩展(旧的Safari扩展)将使用SSL加载资源。对Safari应用程序扩展来说是这样吗？

编辑

我有一个苹果开发者帐户，签了我的扩展，但仍然没有运气。

Answer 1

我使用向safari扩展公开的HTML在响应中将消息传递协议作为字符串发送。

内容脚本请求HTML模板(JS)

let sendMessage = (msgObj, callback) => {
  msgObj.callbackIndex = (safariCallbackCount++).toString(); 
  let callbackKey = msgObj['type']+'_'+msgObj.callbackIndex;
  if (typeof callback === 'function')
    messageCallbacks[callbackKey] = callback;
  safari.extension.dispatchMessage(msgObj['type'], msgObj);
}
sendMessage({type: 'loadTemplate', path: path}, callback );

请注意存储回调函数的messageCallbacks散列以及用于索引唯一性的计数器。您将消息传递给Swift进程，当发送多条消息时，响应可能会恢复正常。

SFSafariExtensionHandler监听消息和句柄(迅速)

func loadTemplate (withPage page: SFSafariPage, withUrl url: URL, withCallbackIndex callbackIndex: String) {
    let pathExtention = url.pathExtension
    let pathPrefix = url.path.replacingOccurrences(of: "." + pathExtention, with: "", options: .literal, range: nil)
    if let filepath = Bundle.main.path(forResource: pathPrefix, ofType: pathExtention) {
        do {
            let contents = try String(contentsOfFile: filepath, encoding: .utf8)
            page.dispatchMessageToScript(withName: "loadTemplate", userInfo: ["htmlData": contents, "callbackIndex": callbackIndex])
        } catch {
            // contents could not be loaded
            NSLog("ERROR CONTENTS COULD NOT BE LOADED FROM \(filepath)")
        }
    } else {
        NSLog("Could not build file path")
    }
}
        // This method will be called when a content script provided by your extension calls safari.extension.dispatchMessage("message").
override func messageReceived(withName messageName: String, from page: SFSafariPage, userInfo: [String : Any]?) {
    page.getPropertiesWithCompletionHandler { properties in
        switch messageName {
        case "loadTemplate":
            self.loadTemplate(withPage: page, withUrl: URL(string: userInfo?["path"] as! String)!, withCallbackIndex: userInfo?["callbackIndex"] as! String)
        default:
            NSLog("NO DEFINITION FOR STRING VALUE")
        }
    }
}

内容脚本处理响应(JS)

let handleMessage = event => {
  let callbackIndex = event.message.callbackIndex;
  delete event.message.callbackIndex;
  let callbackKey = event.name+'_'+callbackIndex;
  if ( typeof messageCallbacks[callbackKey] === 'function' ) {
    messageCallbacks[callbackKey](event.message);
    delete messageCallbacks[callbackKey]
  }
};
safari.self.addEventListener("message", handleMessage);
//// html data is accessible from event.message.htmlData