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Program.cs
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Program.cs
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using DnsClient;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Runtime.InteropServices;
using System.Threading.Tasks;
using Titanium.Web.Proxy;
using Titanium.Web.Proxy.EventArguments;
using Titanium.Web.Proxy.Models;
namespace BanYouClient
{
class Program
{
public delegate bool ConsoleCtrlDelegate(int dwCtrlType);
[DllImport("kernel32.dll")]
static extern bool SetConsoleCtrlHandler(ConsoleCtrlDelegate HandlerRoutine, bool Add);
static ConsoleCtrlDelegate exitHandler = new ConsoleCtrlDelegate(ExitHandler);
const int defaultHTTPPort = 80;
const int defaultHTTPSPort = 443;
static HostsFile hostsFile = new HostsFile();
static ProxyServer proxyServer = new ProxyServer();
static string CurBanYouClientVer = "b20211008.1";
static HttpClientHandler osuHTTPClientHandler = new HttpClientHandler
{
AllowAutoRedirect = false,
UseCookies = false,
AutomaticDecompression = DecompressionMethods.Deflate | DecompressionMethods.GZip
};
static HttpClient osuHTTPClient = new HttpClient(osuHTTPClientHandler);
static LookupClient dnsClient = new LookupClient();
static IDnsQueryResponse ppyDnsResponse = dnsClient.Query("osu.ppy.sh", QueryType.A);
static IEnumerable<DnsClient.Protocol.AddressRecord> ppyDnsAddressList = ppyDnsResponse.Answers.AddressRecords();
static DnsClient.Protocol.AddressRecord ppyDnsAddressRecord = ppyDnsAddressList.ElementAt(new Random().Next(ppyDnsAddressList.Count()));
private static bool ExitHandler(int CtrlType)
{
if (proxyServer.ProxyRunning)
{
try
{
proxyServer.Stop();
}
catch { }
}
hostsFile.Remove();
return false;
}
private static async Task OnRequest(object sender, SessionEventArgs e)
{
/*
if (!e.HttpClient.Request.Url.Contains("ppy.sh"))
{
e.GenericResponse("", HttpStatusCode.BadGateway);
}
*/
Uri requestUri = e.HttpClient.Request.RequestUri;
#if DEBUG
Console.WriteLine("URI: " + requestUri.OriginalString);
#endif
switch (e.HttpClient.Request.Host)
{
case "osu.ppy.sh":
if (requestUri.AbsolutePath.StartsWith("/d/"))
{
string redirectURI = "https://txy1.sayobot.cn/beatmaps/download/" + requestUri.AbsolutePath.Substring(3);
#if DEBUG
Console.WriteLine("Redirect: " + redirectURI);
#endif
e.Redirect(redirectURI);
return;
}
switch (requestUri.AbsolutePath)
{
case "/web/coins.php":
case "/web/lastfm.php":
case "/web/osu-rate.php":
case "/web/osu-magnet.php":
case "/web/osu-comment.php":
case "/web/osu-metrics.php":
case "/web/osu-session.php":
case "/web/osu-getcharts.php":
case "/web/osu-markasread.php":
case "/web/osu-getfriends.php":
case "/web/osu-checktweets.php":
case "/web/osu-getfavourite.php":
case "/web/osu-addfavourite.php":
case "/web/osu-getbeatmapinfo.php":
case "/web/bancho_connect.php":
#if DEBUG
Console.WriteLine("GenericResponse: 200 OK");
#endif
e.Ok("");
return;
case "/web/osu-error.php":
case "/web/osu-getreplay.php":
case "/web/osu-screenshot.php":
case "/web/osu-osz2-getscores.php":
case "/web/osu-submit-modular.php":
case "/web/osu-submit-modular-selector.php":
break;
default:
#if DEBUG
Console.WriteLine("Do nothing.");
#endif
try
{
UriBuilder modUri = new UriBuilder(e.HttpClient.Request.RequestUri);
modUri.Host = ppyDnsAddressRecord.Address.ToString();
HttpRequestMessage httpReqMessage = new HttpRequestMessage(new HttpMethod(e.HttpClient.Request.Method), modUri.Uri);
switch (e.HttpClient.Request.Method.ToUpper())
{
case "PUT":
case "POST":
case "PATCH":
byte[] bodyBytes = await e.GetRequestBody();
if (bodyBytes != null && bodyBytes.Length > 0)
{
httpReqMessage.Content = new ByteArrayContent(await e.GetRequestBody());
}
break;
default:
break;
}
//httpReqMessage.Content = new ByteArrayContent(await e.GetRequestBody());
List<HttpHeader> headers = e.HttpClient.Request.Headers.GetAllHeaders();
foreach (HttpHeader header in headers)
{
try
{
if (string.IsNullOrEmpty(header.Value))
{
continue;
}
switch (header.Name.ToLower())
{
case "host":
case "connection":
case "accept-encoding":
continue;
case "content-length":
if (httpReqMessage != null)
{
httpReqMessage.Content.Headers.ContentLength = long.Parse(header.Value);
}
continue;
case "content-type":
if (httpReqMessage != null)
{
httpReqMessage.Content.Headers.ContentType = System.Net.Http.Headers.MediaTypeHeaderValue.Parse(header.Value);
}
continue;
default:
break;
}
if (!httpReqMessage.Headers.Contains(header.Name))
{
httpReqMessage.Headers.Add(header.Name, header.Value);
}
}
catch (Exception he)
{
Console.WriteLine(he);
Console.WriteLine(header.Name);
}
}
HttpResponseMessage httpResponseMessage = await osuHTTPClient.SendAsync(httpReqMessage);
List<HttpHeader> IDHeaderList = new List<HttpHeader>();
foreach (KeyValuePair<string, IEnumerable<string>> h in httpResponseMessage.Headers.Concat(httpResponseMessage.Content.Headers))
{
switch (h.Key.ToLower())
{
case "alt-svc":
continue;
default:
break;
}
foreach (var c in h.Value)
{
HttpHeader hh = new HttpHeader(h.Key, c);
IDHeaderList.Add(hh);
}
}
IEnumerable<HttpHeader> IDHeader = IDHeaderList.AsEnumerable();
e.GenericResponse(await httpResponseMessage.Content.ReadAsByteArrayAsync(), httpResponseMessage.StatusCode, IDHeader);
}
catch (TaskCanceledException)
{
}
catch (HttpRequestException requestWebException)
{
if (requestWebException.InnerException is WebException && requestWebException.InnerException.InnerException is System.Net.Sockets.SocketException)
{
IPAddress before = ppyDnsAddressRecord.Address;
ppyDnsAddressRecord = ppyDnsAddressList.Where(s => s.Address != ppyDnsAddressRecord.Address).ElementAt(new Random().Next(ppyDnsAddressList.Count()));
#if DEBUG
Console.WriteLine("SocketException: " + requestWebException.InnerException.InnerException);
Console.WriteLine("Current ppy DNS Address: " + ppyDnsAddressRecord.Address.ToString());
#endif
Console.WriteLine("ppy 服务器超时,已尝试更换服务器地址.");
}
}
catch (Exception requestException)
{
Console.WriteLine("Exception: " + requestException);
Console.WriteLine(requestException.InnerException);
}
return;
}
e.HttpClient.Request.Host = "score.b.osu.pink";
break;
default:
e.HttpClient.Request.Host = "server.b.osu.pink";
break;
}
#if DEBUG
Console.WriteLine("Proxy to: " + e.HttpClient.Request.Host);
#endif
}
private static void Main(string[] args)
{
SetConsoleCtrlHandler(exitHandler, true);
#if DEBUG
CurBanYouClientVer += "dev";
#endif
string ProgramTitle = string.Format("BanYou 客户端 ({0})", CurBanYouClientVer);
Console.Title = ProgramTitle;
Console.WriteLine("BanYou 客户端初始化...");
CertManager.InstallCertificate("cert/ca.crt", System.Security.Cryptography.X509Certificates.StoreName.Root);
CertManager.InstallCertificate("cert/osu.crt", System.Security.Cryptography.X509Certificates.StoreName.CertificateAuthority);
osuHTTPClient.DefaultRequestHeaders.Host = "osu.ppy.sh";
osuHTTPClient.DefaultRequestHeaders.Connection.Add("keep-alive");
proxyServer.ReuseSocket = false;
proxyServer.BeforeRequest += OnRequest;
int httpPort = defaultHTTPPort;
int httpsPort = defaultHTTPSPort;
if (System.IO.File.Exists("CustomPort"))
{
using (System.IO.StreamReader sr = new System.IO.StreamReader("CustomPort"))
{
#if DEBUG
Console.WriteLine("Parsing CustomPort...");
#endif
bool https = true;
string line;
while ((line = sr.ReadLine()) != null)
{
if (line.StartsWith("HTTP:"))
{
https = false;
line = line.Substring(5);
}
else if (line.StartsWith("HTTPS:"))
{
line = line.Substring(6);
}
else
{
continue;
}
if (int.TryParse(line, out int parsePort))
{
if (parsePort < 1 && parsePort > 65535)
{
continue;
}
if (https)
{
httpsPort = parsePort;
}
else
{
httpPort = parsePort;
}
}
#if DEBUG
else
{
Console.WriteLine("Parsing CustomPort failed!");
}
#endif
}
}
}
#if !DEBUG
if (httpPort != defaultHTTPPort || httpsPort != defaultHTTPSPort)
{
#endif
Console.WriteLine(string.Format("Current Port: {0} (HTTP), {1} (HTTPS)", httpPort, httpsPort));
#if !DEBUG
}
#endif
#if DEBUG
Console.WriteLine("Current ppy DNS Address: " + ppyDnsAddressRecord.Address.ToString());
#endif
TransparentProxyEndPoint httpEndPoint = new TransparentProxyEndPoint(IPAddress.Any, httpPort, false);
TransparentProxyEndPoint httpsEndPoint = new TransparentProxyEndPoint(IPAddress.Any, httpsPort, true)
{
GenericCertificate = new System.Security.Cryptography.X509Certificates.X509Certificate2("cert/ppy.sh.pfx")
};
proxyServer.AddEndPoint(httpEndPoint);
proxyServer.AddEndPoint(httpsEndPoint);
HostsEntry[] hostsEntry = new HostsEntry[] {
new HostsEntry { domain="osu.ppy.sh", ip="127.0.0.1" },
new HostsEntry { domain="c.ppy.sh", ip="127.0.0.1" },
new HostsEntry { domain="ce.ppy.sh", ip="127.0.0.1" }
}.Concat((from x in Enumerable.Range(1, 6) select new HostsEntry { domain = String.Format("c{0}.ppy.sh", x), ip = "127.0.0.1" }).ToArray()).ToArray();
try
{
hostsFile.Write(hostsEntry);
}
catch
{
Console.WriteLine("访问被拒绝,请关闭你的杀毒软件然后再试一次.");
Console.ReadKey(true);
#if !DEBUG
return;
#endif
}
Console.WriteLine("正在启动 BanYou 客户端...");
try
{
proxyServer.Start();
}
catch (Exception e)
{
if (e.InnerException.GetType() == typeof(System.Net.Sockets.SocketException))
{
Console.WriteLine("端口已被占用,如没有重复打开客户端,请使用 FixTool 工具来进行修复.");
}
else
{
Console.WriteLine("Exception: " + e);
Console.WriteLine(e.InnerException);
}
Console.ReadKey(true);
return;
}
Console.WriteLine("启动完成!");
while (true)
{
Console.ReadKey(true);
}
}
}
}