private static async Task <string> DecodeResponse(IHtmlDocument htmlDocument, HttpClient httpClient, HttpResponseMessage httpResponseMessage)
{
string responseString = await httpResponseMessage.Content.ReadAsStringAsync();
string responseJson = string.Empty;
if (responseString.StartsWith("{"))
{
responseJson = responseString;
}
else
{
if (JintEngine == null)
{
IHtmlScriptElement appJsScript = htmlDocument.Scripts.FirstOrDefault(s => s.Source?.Contains("app.js") == true || s.Source?.Contains("app.min.js") == true);
string appJsSource = await httpClient.GetStringAsync(appJsScript.Source);
List <JavaScriptHelper.Function> functions = JavaScriptHelper.Parse(appJsSource);
JavaScriptHelper.Function readFunction = functions.FirstOrDefault(f => f.Name == "read");
JintEngine = new Engine();
JintEngine.Execute(readFunction.Body);
}
JsValue jsValue = JintEngine.Invoke("read", responseString);
responseJson = Encoding.UTF8.GetString(Convert.FromBase64String(jsValue.ToString()));
}
return(responseJson);
}
private static async Task <string> DecodeResponse(IHtmlDocument htmlDocument, HttpClient httpClient, HttpResponseMessage httpResponseMessage)
{
string responseString = await httpResponseMessage.Content.ReadAsStringAsync();
string responseJson = string.Empty;
if (responseString.StartsWith("{"))
{
responseJson = responseString;
}
else
{
lock (DecodeResponseLock)
{
if (JintEngine == null)
{
IHtmlScriptElement appJsScript = htmlDocument.Scripts.FirstOrDefault(s =>
s.Source?.Contains("app.js") == true ||
s.Source?.Contains("app.min.js") == true ||
s.Source?.Contains("app.obf.js") == true ||
s.Source?.Contains("app.obf.min.js") == true
);
Obfuscated = appJsScript.Source.Contains("obf.");
string appJsSource = httpClient.GetStringAsync(appJsScript.Source.Replace("obf.", string.Empty)).GetAwaiter().GetResult();
List <JavaScriptHelper.Function> functions = JavaScriptHelper.Parse(appJsSource);
JintEngine = new Engine();
JintEngine.Execute(functions.FirstOrDefault(f => f.Name == "read").Body);
if (Obfuscated)
{
Func <string, string> atob = str => Encoding.Latin1.GetString(Convert.FromBase64String(str));
JintEngine.SetValue("atob", atob);
JintEngine.Execute(functions.FirstOrDefault(f => f.Name == "gdidecode").Body);
}
}
JsValue jsValue = JintEngine.Invoke("read", responseString);
if (Obfuscated)
{
jsValue = JintEngine.Invoke("gdidecode", jsValue.ToString());
responseJson = jsValue.ToString();
}
else
{
responseJson = Encoding.UTF8.GetString(Convert.FromBase64String(jsValue.ToString()));
}
}
}
return(responseJson);
}
