Safari App Extensions:在HTTPS页面上加载HTML文件

时间:2018-06-13 19:43:34

标签: macos safari safari-extension safari-app-extension

我正在开发Safari App Extension(因为Safari Extensions现已正式弃用),我想通过JS将一些HTML注入页面。但是,当我向safari-extension:// URL发出请求时,请求是在没有SSL的情况下发出的,并且Safari当前会阻止混合内容,并且不允许任何方式更改该策略。所以我有两个问题。

  1. 如何解决我的开发环境中的这个问题?

  2. 我在评论here中读到生产打包扩展程序(旧的Safari扩展程序)将使用SSL加载资源。这适用于Safari App Extensions吗?

  3. 修改

    我有一个Apple开发者帐户,签了我的分机,但仍然没有运气。

1 个答案:

答案 0 :(得分:1)

我使用Safari应用程序扩展程序公开的messaging protocol野生动物园来在响应中将HTML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 messageCallbacks 哈希,该哈希存储回调函数以及用于索引唯一性的计数器。您正在将消息传递给Swift进程,发送多条消息时,响应可能会混乱。

SFSafariExtensionHandler侦听消息和句柄(Swift)

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