public static byte[] GetDataByMWebClient(string url, bool proxyEnable = false, IWebProxy wProxy = null,
bool allowRedirect = true)
{
MWebClient mWebClient = new MWebClient {
Headers = { ["User-Agent"] = "AuroraDNSC/0.1" }
};
mWebClient.AllowAutoRedirect = allowRedirect;
mWebClient.Proxy = proxyEnable ? wProxy : new WebProxy();
return(mWebClient.DownloadData(url));
}
public static string GetStringByMWebClient(string url, bool proxyEnable = false, IWebProxy wProxy = null,
bool allowRedirect = true)
{
MWebClient mWebClient = new MWebClient
{
Headers = { ["User-Agent"] = "AuroraDNSC/0.1" },
AllowAutoRedirect = allowRedirect,
Proxy = proxyEnable ? wProxy : new WebProxy()
};
return(mWebClient.DownloadString(url));
}
public static byte[] GetDataByMWebClient(string url, bool proxyEnable = false, IWebProxy wProxy = null)
{
MWebClient mWebClient = new MWebClient {
Headers = { ["User-Agent"] = "AuroraDNSC/0.1" }
};
//if (bool) webClient.AllowAutoRedirect = false;
if (proxyEnable)
{
mWebClient.Proxy = wProxy;
}
return(mWebClient.DownloadData(url));
}
private static (List <DnsRecordBase> list, ReturnCode statusCode) ResolveOverHttpsByDnsMsg(string clientIpAddress, string domainName, string dohUrl,
bool proxyEnable = false, IWebProxy wProxy = null, RecordType type = RecordType.A)
{
DnsMessage dnsMsg;
MWebClient mWebClient = new MWebClient {
Headers = { ["User-Agent"] = "AuroraDNSC/0.1" }
};
if (proxyEnable)
{
mWebClient.Proxy = wProxy;
}
var dnsBase64String = Convert.ToBase64String(MyDnsSend.GetQuestionData(domainName.TrimEnd('.'), type)).TrimEnd('=')
.Replace('+', '-').Replace('/', '_');
try
{
var dnsDataBytes = mWebClient.DownloadData(
$"{dohUrl}?ct=application/dns-message&dns={dnsBase64String}&edns_client_subnet={clientIpAddress}");
dnsMsg = DnsMessage.Parse(dnsDataBytes);
}
catch (WebException e)
{
HttpWebResponse response = (HttpWebResponse)e.Response;
try
{
BackgroundLog($@"| - Catch WebException : {Convert.ToInt32(response.StatusCode)} {response.StatusCode} | {domainName} | {dohUrl} | {dnsBase64String}");
if (response.StatusCode == HttpStatusCode.BadRequest)
{
DnsSettings.DnsMsgEnable = false;
return(ResolveOverHttpsByDnsJson(clientIpAddress, domainName, DnsSettings.SecondHttpsDnsUrl,
proxyEnable, wProxy, type));
}
}
catch (Exception exception)
{
BackgroundLog($@"| - Catch WebException : {exception.Message} | {domainName} | {dohUrl} | {dnsBase64String}");
}
if (dohUrl != DnsSettings.HttpsDnsUrl)
{
return(new List <DnsRecordBase>(), ReturnCode.ServerFailure);
}
BackgroundLog($@"| -- SecondDoH : {DnsSettings.SecondHttpsDnsUrl}");
return(ResolveOverHttpsByDnsMsg(clientIpAddress, domainName, DnsSettings.SecondHttpsDnsUrl,
proxyEnable, wProxy, type));
}
return(dnsMsg.AnswerRecords, dnsMsg.ReturnCode);
}
private static (List <dynamic> list, ReturnCode statusCode) ResolveOverHttps(string clientIpAddress, string domainName,
bool proxyEnable = false, IWebProxy wProxy = null, RecordType type = RecordType.A)
{
string dnsStr;
List <dynamic> recordList = new List <dynamic>();
using (MWebClient webClient = new MWebClient())
{
webClient.Headers["User-Agent"] = "AuroraDNSC/0.1";
// webClient.AllowAutoRedirect = false;
if (proxyEnable)
{
webClient.Proxy = wProxy;
}
try
{
dnsStr = webClient.DownloadString(
DnsSettings.HttpsDnsUrl +
@"?ct=application/dns-json&" +
$"name={domainName}&type={type.ToString().ToUpper()}&edns_client_subnet={clientIpAddress}");
}
catch (WebException e)
{
HttpWebResponse response = (HttpWebResponse)e.Response;
try
{
BgwLog($@"| - Catch WebException : {Convert.ToInt32(response.StatusCode)} {response.StatusCode} | {domainName}");
}
catch (Exception exception)
{
BgwLog($@"| - Catch WebException : {exception.Message} | {domainName}");
//MainWindow.NotifyIcon.ShowBalloonTip(360, "AuroraDNS - 错误",
// $"异常 : {exception.Message} {Environment.NewLine} {domainName}", ToolTipIcon.Warning);
}
return(new List <dynamic>(), ReturnCode.ServerFailure);
}
}
JsonValue dnsJsonValue = Json.Parse(dnsStr);
int statusCode = dnsJsonValue.AsObjectGetInt("Status");
if (statusCode != 0)
{
return(new List <dynamic>(), (ReturnCode)statusCode);
}
if (dnsStr.Contains("\"Answer\""))
{
var dnsAnswerJsonList = dnsJsonValue.AsObjectGetArray("Answer");
foreach (var itemJsonValue in dnsAnswerJsonList)
{
string answerAddr = itemJsonValue.AsObjectGetString("data");
string answerDomainName = itemJsonValue.AsObjectGetString("name");
int answerType = itemJsonValue.AsObjectGetInt("type");
int ttl = itemJsonValue.AsObjectGetInt("TTL");
switch (type)
{
case RecordType.A:
{
if (Convert.ToInt32(RecordType.A) == answerType)
{
ARecord aRecord = new ARecord(
DomainName.Parse(answerDomainName), ttl, IPAddress.Parse(answerAddr));
recordList.Add(aRecord);
}
else if (Convert.ToInt32(RecordType.CName) == answerType)
{
CNameRecord cRecord = new CNameRecord(
DomainName.Parse(answerDomainName), ttl, DomainName.Parse(answerAddr));
recordList.Add(cRecord);
//recordList.AddRange(ResolveOverHttps(clientIpAddress,answerAddr));
//return recordList;
}
break;
}
case RecordType.Aaaa:
{
if (Convert.ToInt32(RecordType.Aaaa) == answerType)
{
AaaaRecord aaaaRecord = new AaaaRecord(
DomainName.Parse(answerDomainName), ttl, IPAddress.Parse(answerAddr));
recordList.Add(aaaaRecord);
}
else if (Convert.ToInt32(RecordType.CName) == answerType)
{
CNameRecord cRecord = new CNameRecord(
DomainName.Parse(answerDomainName), ttl, DomainName.Parse(answerAddr));
recordList.Add(cRecord);
}
break;
}
case RecordType.CName when answerType == Convert.ToInt32(RecordType.CName):
{
CNameRecord cRecord = new CNameRecord(
DomainName.Parse(answerDomainName), ttl, DomainName.Parse(answerAddr));
recordList.Add(cRecord);
break;
}
case RecordType.Ns when answerType == Convert.ToInt32(RecordType.Ns):
{
NsRecord nsRecord = new NsRecord(
DomainName.Parse(answerDomainName), ttl, DomainName.Parse(answerAddr));
recordList.Add(nsRecord);
break;
}
case RecordType.Mx when answerType == Convert.ToInt32(RecordType.Mx):
{
MxRecord mxRecord = new MxRecord(
DomainName.Parse(answerDomainName), ttl,
ushort.Parse(answerAddr.Split(' ')[0]),
DomainName.Parse(answerAddr.Split(' ')[1]));
recordList.Add(mxRecord);
break;
}
case RecordType.Txt when answerType == Convert.ToInt32(RecordType.Txt):
{
TxtRecord txtRecord = new TxtRecord(DomainName.Parse(answerDomainName), ttl, answerAddr);
recordList.Add(txtRecord);
break;
}
case RecordType.Ptr when answerType == Convert.ToInt32(RecordType.Ptr):
{
PtrRecord ptrRecord = new PtrRecord(
DomainName.Parse(answerDomainName), ttl, DomainName.Parse(answerAddr));
recordList.Add(ptrRecord);
break;
}
default:
{
statusCode = Convert.ToInt32(ReturnCode.ServerFailure);
break;
}
}
}
}
return(recordList, (ReturnCode)statusCode);
}
