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Hei. Tôi đã đọc nguồn tin bị dịch ngược của Digi Traffic Accelerator (tôi nghĩ đó là cách tốt nhất để tìm hiểu), cho đến khi tôi nhận được một số mã không dễ hiểu! Hãy xem:Hiểu loại do trình biên dịch tạo ra trong mã được giải mã dotPeek
internal class ProxyFarm
{
private static Random rand = new Random();
private static Regex UserPassAtHostPort = new Regex("\r\n ^\r\n (?<user>[^:]+?) : (?<pass>[^@]+?)\r\n @\r\n (?<host>[^:]+? (?: : \\d+)?)\r\n $", RegexOptions.IgnorePatternWhitespace);
private static Regex HostPortUserPass = new Regex("\r\n ^\r\n (?<host>[^:]+? : \\d+) : (?<user>[^:]+?) : (?<pass>.+?)\r\n $", RegexOptions.IgnorePatternWhitespace);
public const string NEW = "new";
public const string ACTIVE = "active";
public const string BLOCKED_BY_GOOGLE = "blocked by Google";
public const string INACTIVE = "inactive";
public const string CHECKING = "Checking...";
static ProxyFarm()
{
}
public static StorageDataSet.ProxiesRow GetRandomProxy(bool WillUseRecaptcha = true)
{
// some normal code
}
public static WebProxy MakeWebProxy(StorageDataSet.ProxiesRow row)
{
// some normal code
}
public static void CheckProxy(StorageDataSet.ProxiesRow proxy)
{
// ISSUE: object of a compiler-generated type is created
// ISSUE: variable of a compiler-generated type
ProxyFarm.\u003C\u003Ec__DisplayClass5 cDisplayClass5 = new ProxyFarm.\u003C\u003Ec__DisplayClass5();
// ISSUE: reference to a compiler-generated field
cDisplayClass5.proxy = proxy;
// ISSUE: reference to a compiler-generated field
if (cDisplayClass5.proxy == null)
return;
// ISSUE: reference to a compiler-generated field
cDisplayClass5.logger = LogManager.GetLogger("Program");
// ISSUE: reference to a compiler-generated field
// ISSUE: reference to a compiler-generated field
cDisplayClass5.state = new ProxyFarm.CallbackState()
{
Proxy = cDisplayClass5.proxy,
Google = ProxyFarm.CheckStatus.NotChecked,
Post = ProxyFarm.CheckStatus.NotChecked
};
// ISSUE: reference to a compiler-generated field
cDisplayClass5.r = (HttpWebRequest) WebRequest.Create("http://www.digitrafficgenerator.com/post_test.php");
// ISSUE: reference to a compiler-generated field
cDisplayClass5.r.Method = "POST";
try
{
// ISSUE: reference to a compiler-generated field
// ISSUE: reference to a compiler-generated field
cDisplayClass5.r.Proxy = (IWebProxy) ProxyFarm.MakeWebProxy(cDisplayClass5.proxy);
}
catch (Exception ex)
{
// ISSUE: reference to a compiler-generated field
// ISSUE: reference to a compiler-generated field
cDisplayClass5.logger.Warn((object) ("Invalid proxy entered: " + cDisplayClass5.proxy.Address), ex);
// ISSUE: reference to a compiler-generated field
ProxyFarm.ChangeStatus(cDisplayClass5.proxy, "inactive");
return;
}
// ISSUE: reference to a compiler-generated field
cDisplayClass5.r.ConnectionGroupName = Guid.NewGuid().ToString();
// ISSUE: reference to a compiler-generated field
cDisplayClass5.byteArray = Encoding.UTF8.GetBytes("q=test");
// ISSUE: reference to a compiler-generated field
// ISSUE: reference to a compiler-generated field
cDisplayClass5.r.ContentLength = (long) cDisplayClass5.byteArray.Length;
// ISSUE: reference to a compiler-generated field
cDisplayClass5.r.ContentType = "application/x-www-form-urlencoded";
// ISSUE: reference to a compiler-generated field
cDisplayClass5.r.Referer = "http://www.digitrafficgenerator.com/post_test.php";
// ISSUE: reference to a compiler-generated field
cDisplayClass5.r.Timeout = 20000;
// ISSUE: reference to a compiler-generated field
// ISSUE: reference to a compiler-generated method
IAsyncResult res = cDisplayClass5.r.BeginGetRequestStream(new AsyncCallback(cDisplayClass5.\u003CCheckProxy\u003Eb__1), (object) null);
// ISSUE: reference to a compiler-generated field
WebObject.AbortRequestAfterTimeout(res, cDisplayClass5.r);
try
{
// ISSUE: reference to a compiler-generated field
// ISSUE: reference to a compiler-generated method
// ISSUE: reference to a compiler-generated field
res = cDisplayClass5.r.BeginGetResponse(new AsyncCallback(cDisplayClass5.\u003CCheckProxy\u003Eb__2), (object) cDisplayClass5.r);
}
catch (Exception ex)
{
// ISSUE: reference to a compiler-generated field
// ISSUE: reference to a compiler-generated field
cDisplayClass5.logger.Info((object) ("Got an exception using " + cDisplayClass5.proxy.Address), ex);
}
// ISSUE: reference to a compiler-generated field
WebObject.AbortRequestAfterTimeout(res, cDisplayClass5.r);
HttpWebRequest request = (HttpWebRequest) WebRequest.Create("http://www.google.com/recaptcha/api/js/recaptcha.js");
request.Method = "GET";
// ISSUE: reference to a compiler-generated field
request.Proxy = (IWebProxy) ProxyFarm.MakeWebProxy(cDisplayClass5.proxy);
request.Timeout = 20000;
request.ConnectionGroupName = Guid.NewGuid().ToString();
// ISSUE: reference to a compiler-generated method
WebObject.AbortRequestAfterTimeout(request.BeginGetResponse(new AsyncCallback(cDisplayClass5.\u003CCheckProxy\u003Eb__3), (object) request), request);
}
protected static void ProxyChecked(IAsyncResult result, HttpWebRequest req, ProxyFarm.CallbackState state)
{
ILog logger = LogManager.GetLogger("Program");
ProxyFarm.CheckStatus checkStatus = ProxyFarm.CheckStatus.NotOk;
try
{
HttpWebResponse httpWebResponse = (HttpWebResponse) req.EndGetResponse(result);
if (req.RequestUri == httpWebResponse.ResponseUri)
{
if (httpWebResponse.StatusCode == HttpStatusCode.OK)
checkStatus = ProxyFarm.CheckStatus.Ok;
}
}
catch (Exception ex)
{
}
lock (state)
{
if (req.RequestUri.Authority.Contains("google.com"))
state.Google = checkStatus;
else
state.Post = checkStatus;
if (state.Post == ProxyFarm.CheckStatus.NotOk)
{
ProxyFarm.ChangeStatus(state.Proxy, "inactive");
logger.Info((object) ("Marking " + state.Proxy.Address + " as inactive as it cannot POST"));
}
else if (state.Google == ProxyFarm.CheckStatus.NotOk)
{
ProxyFarm.ChangeStatus(state.Proxy, "inactive");
logger.Info((object) ("Marking " + state.Proxy.Address + " as inactive as it is blocked by google"));
}
else
{
if (state.Google != ProxyFarm.CheckStatus.Ok || state.Post != ProxyFarm.CheckStatus.Ok)
return;
ProxyFarm.ChangeStatus(state.Proxy, "active");
}
}
}
public static void ReportBrokenProxy(StorageDataSet.ProxiesRow proxy, bool recaptcha_fail = false)
{
// some normal code
}
private static void ChangeStatus(StorageDataSet.ProxiesRow Proxy, string status)
{
// some normal code
}
public enum CheckStatus
{
NotChecked,
Ok,
NotOk,
}
protected class CallbackState
{
public StorageDataSet.ProxiesRow Proxy { get; set; }
public ProxyFarm.CheckStatus Post { get; set; }
public ProxyFarm.CheckStatus Google { get; set; }
}
}
Như bạn thấy, có vẻ như trong CheckProxy phương pháp, trình biên dịch tạo ra một kiểu mới! Bạn có bất kỳ ý tưởng những gì đang thực sự xảy ra trong phương pháp này? Làm thế nào tôi có thể hiểu được mã?
Đây là sự thiếu hụt bộ giải mã, báo cáo. – usr