sample.cs

sample.cs

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Net.Cache;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading;

namespace ConsoleApplication1
{
	class CSACaptureBreaker
	{
		private static readonly Regex CoralClean=new Regex(@"[^\d]",RegexOptions.Compiled);
		public String BreakCoral(String captchaBase64)
		{
			var r = (HttpWebRequest) WebRequest.Create("http://127.0.0.1:8099/");//"gsa_test.gsa");
			r.ServicePoint.Expect100Continue = false;
			r.CachePolicy = new RequestCachePolicy(RequestCacheLevel.NoCacheNoStore);
			r.ContentType = @"multipart/form-data; boundary=----WebKitFormBoundarynu7U7xBmkURa26xU";
			using (var ms = new MemoryStream())
			{
				using (var wr = new StreamWriter(ms, Encoding.ASCII))
				{
					wr.Write("------WebKitFormBoundarynu7U7xBmkURa26xU\r\n");
					wr.Write("Content-Disposition: form-data; name=\"file\"; filename=\""+Guid.NewGuid().ToString("N")+".png\"\r\n");
					wr.Write("Content-Type: image/png\r\n\r\n");
					wr.Flush();
					var img = Convert.FromBase64String(captchaBase64);
					ms.Write(img,0,img.Length);
					wr.Write("\r\n------WebKitFormBoundarynu7U7xBmkURa26xU--\r\n");
				}
				var q = ms.ToArray();
				r.ContentLength = q.Length;
				r.Method = @"POST";
				//r.
				using(var reqS=r.GetRequestStream())
				{
					reqS.Write(q,0,q.Length);
				}
			}
			using(var rsp=r.GetResponse())
			{
				using(var rspS=rsp.GetResponseStream())
				{
					var a = new byte[rsp.ContentLength];
					rspS.Read(a, 0, a.Length);
					var str = Encoding.ASCII.GetString(a).Split(new char[]{'|'},6)[5];
					Console.WriteLine(str);
					return  (CoralClean.Replace(str,"") + "12345").Substring(0,5);

				}
			}
		}
	}

	class Program
	{
		static void Main(string[] args)
		{
			var cb = new CSACaptureBreaker();
			var base64 = Convert.ToBase64String(File.ReadAllBytes(@"C:\1\a\coral-1017.png"));
			for (var i = 0; i < 100; ++i)
			{
				Thread.Sleep(TimeSpan.FromSeconds(1));
				if ("12345".Equals(cb.BreakCoral(base64))) return;
			}
		}
	}
}