static public DNSPacket DNSCall(string domainName, IPEndPoint DNSEndpoint)
{
var client = new UdpClient();
client.Connect(DNSEndpoint);
List <DNSQuestion> queries = new List <DNSQuestion>();
queries.Add(new DNSQuestion(domainName));
DNSPacket packet = new DNSPacket(queries);
Console.WriteLine("DNSQuery packet: ");
packet.print();
var ba = packet.toByteArray();
client.Send(ba, ba.Length);
IPEndPoint remoteEP = null;
var receivedData = client.Receive(ref remoteEP);
client.Close();
packet = new DNSPacket(receivedData);
return(packet);
}
static public List <IPAddress> GetAddressesFromDNSResponse(DNSPacket packet)
{
List <IPAddress> l = new List <IPAddress>();
for (int i = 0; i < packet.Answers.Count; i++)
{
if (packet.Answers[i].type != 1)
{
continue;
}
string addr = "";
for (int k = 0; k < packet.Answers[i].data.Length; k++)
{
addr += ((int)packet.Answers[i].data[k]).ToString();
if (k != packet.Answers[i].data.Length - 1)
{
addr += ".";
}
}
l.Add(IPAddress.Parse(addr));
}
return(l);
}
static void Main(string[] args)
{
task ClientTask = () =>
{
string domainName = "www.google.ca";
string rootPath = "/";
const string imageSearchRegexPattern = "([a-z\\-_0-9\\/\\:\\.]*\\.(jpg|jpeg|png|gif|tiff))";
const string domainNameRegexPattern = "/[a-z]*\\.[a-z]*\\.[a-z]*/";
IPEndPoint DNSEndpoint = googleDNSEndpoints[0];
DNSPacket receivedPacket = DNSCall(domainName, DNSEndpoint);
Console.WriteLine("");
Console.WriteLine("Received packet: ");
receivedPacket.print();
var vA = GetAddressesFromDNSResponse(receivedPacket);
IPAddress theAddress = vA.First();
var baR = ExecuteHttpRequest(domainName, rootPath, theAddress);
string test = new string(baR.Select(c => (char)c).ToArray());
Console.WriteLine("");
Console.WriteLine("HttpRequestAnswer: ");
Console.WriteLine(test);
Regex regex = new Regex(imageSearchRegexPattern);
MatchCollection match = regex.Matches(test);
string domain = "";
string path = "";
if (match.Count > 0)
{
foreach (Match m in match)
{
if (m == null)
{
continue;
}
if (m.Value.ToLower().Contains("https"))
{
domain = new string(m.Value.Skip(8).TakeWhile(c => c != '/').ToArray());
path = new string(m.Value.Skip(8 + domain.Length).TakeWhile(c => c != '\r').ToArray());
break;
}
}
}
baR = ExecuteHttpRequest(domain, path, theAddress);
test = new string(baR.Select(c => (char)c).ToArray());
Console.WriteLine("");
Console.WriteLine("HttpRequestAnswer: ");
Console.WriteLine(test); // this line makes a window sound. What the actual f**k
string[] lines = test.Split('\n');
int j;
int nbBytesToSkip = 0;
for (j = 0; j < lines.Length; j++)
{
if (string.IsNullOrWhiteSpace(lines[j]))
{
nbBytesToSkip += lines[j].Length + 1;
break;
}
else
{
nbBytesToSkip += lines[j].Length + 1;
}
}
var asdda = test.Skip(nbBytesToSkip).Take(test.Length - nbBytesToSkip).Select(c => c).ToArray();
ByteArrayToFile(@".\test2.jpg", test.Skip(nbBytesToSkip).Take(test.Length - nbBytesToSkip).Select(c => (byte)c).ToArray());
int sad = 2;
};
var qwe = Task.Run(new Action(ClientTask));
qwe.Wait();
Console.ReadLine();
}