| 1 |
|
| 2 |
using System; |
| 3 |
using System.Linq; |
| 4 |
using System.IO; |
| 5 |
using System.Net; |
| 6 |
using System.Text; |
| 7 |
using System.Net.Sockets; |
| 8 |
using System.Threading; |
| 9 |
using System.Collections; |
| 10 |
using System.Collections.Generic; |
| 11 |
using System.Security.Cryptography; |
| 12 |
using System.Runtime.Serialization.Formatters.Binary; |
| 13 |
using System.Text.RegularExpressions; |
| 14 |
|
| 15 |
namespace _olbaid_websockets |
| 16 |
{ |
| 17 |
|
| 18 |
class UnPack { |
| 19 |
|
| 20 |
byte [] buffer; |
| 21 |
public int position; |
| 22 |
|
| 23 |
public UnPack(byte[] b){ |
| 24 |
buffer = b; |
| 25 |
position = 0; |
| 26 |
} |
| 27 |
|
| 28 |
public uint w (){ |
| 29 |
uint num = 0; |
| 30 |
byte bite = 0; |
| 31 |
do { |
| 32 |
num*=128; |
| 33 |
bite = buffer[position++]; |
| 34 |
num+=(uint)(bite&0x7f); |
| 35 |
}while ((bite&0x80)>0); |
| 36 |
return num; |
| 37 |
} |
| 38 |
} |
| 39 |
class Client |
| 40 |
{ |
| 41 |
private Socket client; |
| 42 |
private Thread thread; |
| 43 |
private Socket deliantraClient = null; |
| 44 |
private bool upgraded = false; |
| 45 |
private bool mask = true; |
| 46 |
private bool useHixie = false; |
| 47 |
|
| 48 |
Random r = new Random(); |
| 49 |
|
| 50 |
System.Text.UTF8Encoding encodingUTF8 = new System.Text.UTF8Encoding(); |
| 51 |
|
| 52 |
|
| 53 |
private byte[] buffer = new byte[4096*16]; |
| 54 |
private byte[] mergedBuffer = new byte[4096*32]; |
| 55 |
private int mergedBufferLength = 0; |
| 56 |
|
| 57 |
public bool IsBitSet(byte b, int pos) { |
| 58 |
return (b & (int)Math.Pow(2, pos)) > 0 ? true : false; |
| 59 |
} |
| 60 |
|
| 61 |
public static int getNSpaces (string s){ |
| 62 |
return (new String(s.Where( c=> c==' ').ToArray())).Length; |
| 63 |
} |
| 64 |
|
| 65 |
public static Int64 numbers(string s){ |
| 66 |
char[] nums = s.Where( c => Char.IsNumber(c)).ToArray(); |
| 67 |
Int64 ret = Int64.Parse(new String(nums)); |
| 68 |
return ret; |
| 69 |
} |
| 70 |
|
| 71 |
public static void setBytes(byte [] buffer,UInt16 val,int index){ |
| 72 |
for (int i=0;i<2;++i){ |
| 73 |
byte b = (byte)((val >> (3-i)*8)&0xff); |
| 74 |
buffer[index+i] = b; |
| 75 |
} |
| 76 |
} |
| 77 |
|
| 78 |
public static void setBytes(byte [] buffer,UInt32 val,int index){ |
| 79 |
for (int i=0;i<4;++i){ |
| 80 |
byte b = (byte)((val >> (3-i)*8)&0xff); |
| 81 |
buffer[index+i] = b; |
| 82 |
} |
| 83 |
} |
| 84 |
|
| 85 |
public static void setBytesR(byte [] buffer,UInt16 val,int index){ |
| 86 |
for (int i=1;i>=0;--i){ |
| 87 |
byte b = (byte)((val >> (3-i)*8)&0xff); |
| 88 |
buffer[index+i] = b; |
| 89 |
} |
| 90 |
} |
| 91 |
|
| 92 |
public static byte [] calcHixieResponse (string key1,string key2,byte [] l8b){ |
| 93 |
UInt64 numbers1 = (UInt64) numbers(key1); |
| 94 |
UInt64 numbers2 = (UInt64) numbers(key2); |
| 95 |
UInt64 spaces1 = (ulong)getNSpaces(key1); |
| 96 |
UInt64 spaces2 = (ulong)getNSpaces(key2); |
| 97 |
byte [] key = new byte [16]; |
| 98 |
|
| 99 |
Array.Clear(key,0,16); |
| 100 |
|
| 101 |
setBytes(key,(UInt32)(((numbers1/spaces1))),0); |
| 102 |
setBytes(key,(UInt32)(((numbers2/spaces2))),4); |
| 103 |
|
| 104 |
Array.Copy(l8b,0,key,8,8); |
| 105 |
MD5 md5Hash = MD5.Create(); |
| 106 |
return md5Hash.ComputeHash(key); |
| 107 |
} |
| 108 |
|
| 109 |
public static void setBytesR(byte [] buffer,UInt32 val,int index){ |
| 110 |
for (int i=3;i>=0;--i){ |
| 111 |
byte b = (byte)((val >> (3-i)*8)&0xff); |
| 112 |
buffer[index+i] = b; |
| 113 |
} |
| 114 |
} |
| 115 |
public void onReceivedClientData (IAsyncResult asyn){ |
| 116 |
|
| 117 |
Socket mySocket = (Socket)asyn.AsyncState; |
| 118 |
|
| 119 |
int bytesRead = mySocket.EndReceive(asyn); |
| 120 |
if (bytesRead==0){ |
| 121 |
Console.WriteLine ("Connection closed by socket {0}" , mySocket==client?" client " : " deliantra "); |
| 122 |
|
| 123 |
mySocket.Close(); |
| 124 |
|
| 125 |
if ((mySocket==client)&&(deliantraClient!=null)){ |
| 126 |
client = null; |
| 127 |
Console.WriteLine ("trying to close deliantraClient"); |
| 128 |
try { |
| 129 |
deliantraClient.Close(); |
| 130 |
deliantraClient = null; |
| 131 |
}catch (Exception ex){ |
| 132 |
|
| 133 |
} |
| 134 |
} |
| 135 |
return; |
| 136 |
} |
| 137 |
|
| 138 |
|
| 139 |
if (mySocket == client){ |
| 140 |
//deliantraClient.Send(buffer,bytesRead,0); |
| 141 |
Hashtable request = new Hashtable(); |
| 142 |
|
| 143 |
if (upgraded == false){ |
| 144 |
dump(buffer,bytesRead); |
| 145 |
string incoming = encodingUTF8.GetString(buffer,0,bytesRead); |
| 146 |
|
| 147 |
Console.WriteLine (incoming); |
| 148 |
|
| 149 |
string [] lines = incoming.Split(new string [] {"\n"},StringSplitOptions.RemoveEmptyEntries); |
| 150 |
|
| 151 |
for (int i = 1;i<lines.Length;++i){ |
| 152 |
string [] line = lines[i].Split(new string [] {": "},StringSplitOptions.RemoveEmptyEntries); |
| 153 |
if (line.Length>=3) |
| 154 |
request.Add(line[0].ToString().ToLower().Trim(),line[1] + ":" + line[2]); |
| 155 |
else if (line.Length>=2) |
| 156 |
request.Add(line[0].ToString().ToLower().Trim(),line[1]); |
| 157 |
|
| 158 |
} |
| 159 |
foreach (DictionaryEntry e in request){ |
| 160 |
Console.WriteLine(e.Key.ToString() + " : '" + e.Value.ToString() + "'"); |
| 161 |
} |
| 162 |
|
| 163 |
|
| 164 |
if (request["sec-websocket-key1"]!=null){ |
| 165 |
string key1 = "357184 636 L0"; |
| 166 |
key1 = request["sec-websocket-key1"].ToString().Trim(); |
| 167 |
|
| 168 |
string key2 = "U 4=> 9&6= 52OeA[8 #880"; |
| 169 |
key2 = request["sec-websocket-key2"].ToString().Trim(); |
| 170 |
byte [] l8b = new byte[8]; |
| 171 |
Array.Copy (buffer,bytesRead-8,l8b,0,8); |
| 172 |
|
| 173 |
dump(l8b,8); |
| 174 |
|
| 175 |
byte [] hixiResp = calcHixieResponse(key1,key2,l8b); |
| 176 |
|
| 177 |
string origin = (string) (request["origin"] != null ? request["origin"].ToString().Trim(): ""); |
| 178 |
//origin="http://localhost"; |
| 179 |
string host = (string) (request["host"] != null ? request["host"].ToString().Trim (): ""); |
| 180 |
string location = Regex.Match(incoming,@"(/[a-z]+)",RegexOptions.IgnoreCase).Value.ToString(); |
| 181 |
|
| 182 |
StringBuilder bResponse = new StringBuilder(); |
| 183 |
bResponse.Append("HTTP/1.1 101 WebSocket Protocol Handshake\r\n"); |
| 184 |
bResponse.Append( "Upgrade: WebSocket\r\n"); |
| 185 |
bResponse.Append("Connection: Upgrade\r\n"); |
| 186 |
bResponse.AppendFormat("Sec-WebSocket-Origin: {0}\r\n",origin); |
| 187 |
bResponse.Append( "Sec-WebSocket-Protocol: chat\r\n"); |
| 188 |
bResponse.AppendFormat("Sec-WebSocket-Location: ws://{0}{1}\r\n\r\n",host,location); |
| 189 |
byte [] data = encodingUTF8.GetBytes(bResponse.ToString()); |
| 190 |
byte [] result = new byte[data.Length+hixiResp.Length]; |
| 191 |
Array.Copy(data,0,result,0,data.Length); |
| 192 |
Array.Copy(hixiResp,0,result,data.Length,hixiResp.Length); |
| 193 |
client.Send(result,result.Length,SocketFlags.None); |
| 194 |
useHixie = true; |
| 195 |
upgraded = true; |
| 196 |
}else{ |
| 197 |
string key = ""; |
| 198 |
if (request["sec-websocket-key"]!=null){ |
| 199 |
Console.WriteLine("Key: " + request["sec-websocket-key"].ToString()); |
| 200 |
key = request["sec-websocket-key"].ToString().Trim(); |
| 201 |
}else{ |
| 202 |
key = ""; |
| 203 |
} |
| 204 |
if (request["sec-websocket-extensions"]!=null){ |
| 205 |
mask = false; |
| 206 |
} |
| 207 |
Console.WriteLine(key); |
| 208 |
//key+=Guid.NewGuid().ToString(); |
| 209 |
key+="258EAFA5-E914-47DA-95CA-C5AB0DC85B11"; |
| 210 |
Console.WriteLine(key); |
| 211 |
SHA1 sha = new SHA1CryptoServiceProvider(); |
| 212 |
byte [] hash = sha.ComputeHash(encoding.GetBytes(key)); |
| 213 |
|
| 214 |
key = EncodeTo64(hash); |
| 215 |
Console.WriteLine(key); |
| 216 |
string response = "HTTP/1.1 101 Switching Protocols\n" |
| 217 |
+ "Upgrade: websocket\n" |
| 218 |
+ "Connection: Upgrade\n" |
| 219 |
//+ "Sec-WebSocket-Protocol: chat\r\n" |
| 220 |
+ "Sec-WebSocket-Accept: " + key +"\n\n"; |
| 221 |
response = "HTTP/1.1 101 WebSocket Protocol Handshake\r\n" |
| 222 |
+ "Upgrade: WebSocket\r\n" |
| 223 |
+ "Connection: Upgrade\r\n" |
| 224 |
+ "Sec-WebSocket-Accept: " +key + "\r\n\r\n"; |
| 225 |
client.Send(encoding.GetBytes(response)); |
| 226 |
upgraded = true; |
| 227 |
} |
| 228 |
|
| 229 |
deliantraClient = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); |
| 230 |
deliantraClient.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true); |
| 231 |
IPEndPoint ipLocal = new IPEndPoint(IPAddress.Parse("194.126.175.156"), 13327); |
| 232 |
deliantraClient.Connect(ipLocal); |
| 233 |
deliantraClient.BeginReceive(buffer, 0, 4096, 0, new AsyncCallback(onReceivedClientData),deliantraClient); |
| 234 |
|
| 235 |
}else{ |
| 236 |
//dump (buffer,bytesRead); |
| 237 |
|
| 238 |
String msg = receiveMessage(buffer,bytesRead); |
| 239 |
Console.WriteLine(msg); |
| 240 |
Array.Copy(encodingUTF8.GetBytes(msg),0,buffer,2,bytesRead = encodingUTF8.GetBytes(msg).Length); |
| 241 |
buffer [0] = (byte)(bytesRead/256); |
| 242 |
buffer [1] = (byte)(bytesRead%256); |
| 243 |
deliantraClient.Send(buffer,0,bytesRead+2,0); |
| 244 |
//Console.WriteLine(encoding.GetString(unmaskedData,0,payloadLen)); |
| 245 |
|
| 246 |
//sendMessage("HELLO CRUEL WORLD"); |
| 247 |
|
| 248 |
} |
| 249 |
|
| 250 |
}else{ |
| 251 |
//client.Send(buffer,bytesRead,0); |
| 252 |
//dump (buffer,bytesRead); |
| 253 |
if (client == null){ |
| 254 |
deliantraClient.Close(); |
| 255 |
deliantraClient = null; |
| 256 |
return; |
| 257 |
} |
| 258 |
Array.Copy ( buffer,0,mergedBuffer,mergedBufferLength,bytesRead); |
| 259 |
mergedBufferLength += bytesRead; |
| 260 |
|
| 261 |
int index = 0; |
| 262 |
int len; |
| 263 |
byte [] tmpBuffer; |
| 264 |
while (index<mergedBufferLength){ |
| 265 |
try { |
| 266 |
len = mergedBuffer[index++]*256 + mergedBuffer[index++]; |
| 267 |
//Console.WriteLine("Index : {0}, len : {1}, mergedBufferLength {2}",index,len,mergedBufferLength); |
| 268 |
|
| 269 |
if ((len+index)<=mergedBufferLength){ |
| 270 |
//Console.WriteLine("Sending {0}",encodingUTF8.GetString(mergedBuffer,index,len)); |
| 271 |
//sendMessage(encodingUTF8.GetString(mergedBuffer,index,len)); |
| 272 |
tmpBuffer = new byte [len]; |
| 273 |
Array.Copy(mergedBuffer,index,tmpBuffer,0,len); |
| 274 |
if (encoding.GetString(tmpBuffer,0,2).Equals("ix")){ |
| 275 |
StringBuilder sb = new StringBuilder(); |
| 276 |
UnPack up = new UnPack(tmpBuffer); |
| 277 |
up.position = 3; |
| 278 |
uint id = up.w(); |
| 279 |
up.w(); |
| 280 |
sb.Append(id); |
| 281 |
sb.Append(".png"); |
| 282 |
|
| 283 |
if (!File.Exists("/var/www/olbaid/faces/" + sb.ToString())){ |
| 284 |
BinaryWriter bw = new BinaryWriter(File.OpenWrite("/var/www/olbaid/faces/" + sb.ToString())); |
| 285 |
bw.Write(tmpBuffer,up.position,len-up.position); |
| 286 |
bw.Close(); |
| 287 |
} |
| 288 |
tmpBuffer = new byte [up.position+3]; |
| 289 |
Array.Copy(mergedBuffer,index,tmpBuffer,0,3+up.position); |
| 290 |
|
| 291 |
} |
| 292 |
sendMessage(EncodeTo64(tmpBuffer)); |
| 293 |
|
| 294 |
Array.Copy(mergedBuffer,index+len,mergedBuffer,0,mergedBufferLength-len-2); |
| 295 |
mergedBufferLength -= len + 2; |
| 296 |
index = 0; |
| 297 |
}else{ |
| 298 |
break; |
| 299 |
} |
| 300 |
}catch (Exception ex){ |
| 301 |
} |
| 302 |
|
| 303 |
} |
| 304 |
|
| 305 |
} |
| 306 |
mySocket.BeginReceive(buffer, 0, 4096, 0, new AsyncCallback(onReceivedClientData),mySocket); |
| 307 |
} |
| 308 |
|
| 309 |
|
| 310 |
public string receiveMessage(byte[] buffer,int bytesRead){ |
| 311 |
|
| 312 |
|
| 313 |
if (useHixie){ |
| 314 |
string ret = encodingUTF8.GetString(buffer,1,bytesRead-2); |
| 315 |
Console.WriteLine(ret); |
| 316 |
return ret; |
| 317 |
} |
| 318 |
UInt64 payloadLen = 0; |
| 319 |
|
| 320 |
//int opcode = buffer[0]&0xf; |
| 321 |
|
| 322 |
|
| 323 |
bool mask = IsBitSet(buffer[1],7); |
| 324 |
if (!mask){ |
| 325 |
//Console.WriteLine("Ignoring non masked message"); |
| 326 |
//return; |
| 327 |
} |
| 328 |
|
| 329 |
|
| 330 |
payloadLen = (ulong)(buffer[1]& ~128); |
| 331 |
|
| 332 |
if (payloadLen==125){ |
| 333 |
|
| 334 |
}else if (payloadLen==126){ |
| 335 |
payloadLen = (ulong)(buffer[2]*256 + buffer[3]); |
| 336 |
Array.Copy(buffer,4,buffer,2,bytesRead-2); |
| 337 |
}else if (payloadLen==127){ |
| 338 |
payloadLen = (ulong)(buffer[2]*256*256*256 + buffer[3]*256*256 + buffer[4]*256 + buffer[5]); |
| 339 |
Array.Copy(buffer,6,buffer,2,bytesRead-2); |
| 340 |
} |
| 341 |
|
| 342 |
byte [] maskKey = new byte[]{0,0,0,0}; |
| 343 |
|
| 344 |
if (mask){ |
| 345 |
Array.Copy(buffer,2,maskKey,0,4); |
| 346 |
} |
| 347 |
|
| 348 |
byte [] unmaskedData = new byte[payloadLen]; |
| 349 |
|
| 350 |
|
| 351 |
Array.Copy(buffer,6,unmaskedData,0,(int)payloadLen); |
| 352 |
|
| 353 |
for (int i =0;i<(int)payloadLen;++i){ |
| 354 |
unmaskedData[i]=(byte)(unmaskedData[i]^maskKey[i%4]); |
| 355 |
} |
| 356 |
return encodingUTF8.GetString(unmaskedData); |
| 357 |
} |
| 358 |
public void sendMessage(byte[] message){ |
| 359 |
|
| 360 |
if (useHixie){ |
| 361 |
byte [] data = new byte[message.Length+2]; |
| 362 |
data[0] = 0; |
| 363 |
data[message.Length+1] = 255; |
| 364 |
Array.Copy((message),0,data,1,message.Length); |
| 365 |
client.Send(data,data.Length,SocketFlags.None); |
| 366 |
return; |
| 367 |
} |
| 368 |
//System.Text.UTF8Encoding encoding = new System.Text.UTF8Encoding(); |
| 369 |
byte [] unmaskedData = (message); |
| 370 |
int len = unmaskedData.Length; |
| 371 |
bool big = false; |
| 372 |
bool bigger = false; |
| 373 |
|
| 374 |
if (len>256*256+256){ |
| 375 |
bigger = true; |
| 376 |
}else if (len>125){ |
| 377 |
big = true; |
| 378 |
} |
| 379 |
|
| 380 |
byte [] buffer; |
| 381 |
|
| 382 |
if (bigger){ |
| 383 |
buffer = new byte[len+6+(mask?4:0)]; |
| 384 |
Array.Clear(buffer,0,len+6+(mask?4:0)); |
| 385 |
}else if (big){ |
| 386 |
buffer = new byte[len+4+(mask?4:0)]; |
| 387 |
Array.Clear(buffer,0,len+4+(mask?4:0)); |
| 388 |
}else{ |
| 389 |
buffer = new byte[len+2+(mask?4:0)]; |
| 390 |
Array.Clear(buffer,0,len+2+(mask?4:0)); |
| 391 |
} |
| 392 |
int optcode = 1; |
| 393 |
buffer[0] = (byte)(128 + optcode); |
| 394 |
|
| 395 |
int maskVal = 0; |
| 396 |
|
| 397 |
if (mask){ |
| 398 |
maskVal = 128; |
| 399 |
} |
| 400 |
|
| 401 |
if (bigger){ |
| 402 |
buffer[1] = (byte)(maskVal + 127); |
| 403 |
buffer[5] = (byte)(len%256); |
| 404 |
len/=256; |
| 405 |
buffer[4] = (byte)(len%256); |
| 406 |
len/=256; |
| 407 |
buffer[3] = (byte)(len%256); |
| 408 |
len/=256; |
| 409 |
buffer[2] = (byte)(len%256); |
| 410 |
}else if (big){ |
| 411 |
buffer[1] = (byte)(maskVal + 126); |
| 412 |
buffer[2] = (byte)(len/256); |
| 413 |
buffer[3] = (byte)(len%256); |
| 414 |
}else{ |
| 415 |
buffer[1] = (byte)(maskVal + len ); |
| 416 |
} |
| 417 |
|
| 418 |
if (mask){ |
| 419 |
byte [] maskKey = new byte[4]; |
| 420 |
r.NextBytes(maskKey); |
| 421 |
if (bigger){ |
| 422 |
Array.Copy(maskKey,0,buffer,6,4); |
| 423 |
}else if (big){ |
| 424 |
Array.Copy(maskKey,0,buffer,4,4); |
| 425 |
}else{ |
| 426 |
Array.Copy(maskKey,0,buffer,2,4); |
| 427 |
} |
| 428 |
if (bigger){ |
| 429 |
for (int i = 0 ; i<unmaskedData.Length;++i){ |
| 430 |
buffer[10+i] = (byte)(unmaskedData[i]^maskKey[i%4]); |
| 431 |
} |
| 432 |
}else if (big){ |
| 433 |
for (int i = 0 ; i<unmaskedData.Length;++i){ |
| 434 |
buffer[8+i] = (byte)(unmaskedData[i]^maskKey[i%4]); |
| 435 |
} |
| 436 |
}else{ |
| 437 |
for (int i = 0 ; i<unmaskedData.Length;++i){ |
| 438 |
buffer[6+i] = (byte)(unmaskedData[i]^maskKey[i%4]); |
| 439 |
} |
| 440 |
} |
| 441 |
}else{ |
| 442 |
int offset = 0; |
| 443 |
if (bigger){ |
| 444 |
offset=6; |
| 445 |
}else if (big){ |
| 446 |
offset=4; |
| 447 |
}else{ |
| 448 |
offset=2; |
| 449 |
} |
| 450 |
for (int i = 0 ; i<unmaskedData.Length;++i){ |
| 451 |
buffer[offset+i] = (byte)(unmaskedData[i]); |
| 452 |
} |
| 453 |
} |
| 454 |
|
| 455 |
client.Send(buffer); |
| 456 |
|
| 457 |
|
| 458 |
} |
| 459 |
public void sendMessage(string message){ |
| 460 |
|
| 461 |
if (useHixie){ |
| 462 |
byte [] data = new byte[message.Length+2]; |
| 463 |
data[0] = 0; |
| 464 |
data[message.Length+1] = 255; |
| 465 |
Array.Copy(encodingUTF8.GetBytes(message),0,data,1,message.Length); |
| 466 |
client.Send(data,data.Length,SocketFlags.None); |
| 467 |
return; |
| 468 |
} |
| 469 |
//System.Text.UTF8Encoding encoding = new System.Text.UTF8Encoding(); |
| 470 |
byte [] unmaskedData = encoding.GetBytes(message); |
| 471 |
int len = unmaskedData.Length; |
| 472 |
bool big = false; |
| 473 |
bool bigger = false; |
| 474 |
|
| 475 |
if (len>256*256+256){ |
| 476 |
bigger = true; |
| 477 |
}else if (len>125){ |
| 478 |
big = true; |
| 479 |
} |
| 480 |
|
| 481 |
byte [] buffer; |
| 482 |
|
| 483 |
if (bigger){ |
| 484 |
buffer = new byte[len+6+(mask?4:0)]; |
| 485 |
Array.Clear(buffer,0,len+6+(mask?4:0)); |
| 486 |
}else if (big){ |
| 487 |
buffer = new byte[len+4+(mask?4:0)]; |
| 488 |
Array.Clear(buffer,0,len+4+(mask?4:0)); |
| 489 |
}else{ |
| 490 |
buffer = new byte[len+2+(mask?4:0)]; |
| 491 |
Array.Clear(buffer,0,len+2+(mask?4:0)); |
| 492 |
} |
| 493 |
int optcode = 1; |
| 494 |
buffer[0] = (byte)(128 + optcode); |
| 495 |
|
| 496 |
int maskVal = 0; |
| 497 |
|
| 498 |
if (mask){ |
| 499 |
maskVal = 128; |
| 500 |
} |
| 501 |
|
| 502 |
if (bigger){ |
| 503 |
buffer[1] = (byte)(maskVal + 127); |
| 504 |
buffer[5] = (byte)(len%256); |
| 505 |
len/=256; |
| 506 |
buffer[4] = (byte)(len%256); |
| 507 |
len/=256; |
| 508 |
buffer[3] = (byte)(len%256); |
| 509 |
len/=256; |
| 510 |
buffer[2] = (byte)(len%256); |
| 511 |
}else if (big){ |
| 512 |
buffer[1] = (byte)(maskVal + 126); |
| 513 |
buffer[2] = (byte)(len/256); |
| 514 |
buffer[3] = (byte)(len%256); |
| 515 |
}else{ |
| 516 |
buffer[1] = (byte)(maskVal + len ); |
| 517 |
} |
| 518 |
|
| 519 |
if (mask){ |
| 520 |
byte [] maskKey = new byte[4]; |
| 521 |
r.NextBytes(maskKey); |
| 522 |
if (bigger){ |
| 523 |
Array.Copy(maskKey,0,buffer,6,4); |
| 524 |
}else if (big){ |
| 525 |
Array.Copy(maskKey,0,buffer,4,4); |
| 526 |
}else{ |
| 527 |
Array.Copy(maskKey,0,buffer,2,4); |
| 528 |
} |
| 529 |
if (bigger){ |
| 530 |
for (int i = 0 ; i<unmaskedData.Length;++i){ |
| 531 |
buffer[10+i] = (byte)(unmaskedData[i]^maskKey[i%4]); |
| 532 |
} |
| 533 |
}else if (big){ |
| 534 |
for (int i = 0 ; i<unmaskedData.Length;++i){ |
| 535 |
buffer[8+i] = (byte)(unmaskedData[i]^maskKey[i%4]); |
| 536 |
} |
| 537 |
}else{ |
| 538 |
for (int i = 0 ; i<unmaskedData.Length;++i){ |
| 539 |
buffer[6+i] = (byte)(unmaskedData[i]^maskKey[i%4]); |
| 540 |
} |
| 541 |
} |
| 542 |
}else{ |
| 543 |
int offset = 0; |
| 544 |
if (bigger){ |
| 545 |
offset=6; |
| 546 |
}else if (big){ |
| 547 |
offset=4; |
| 548 |
}else{ |
| 549 |
offset=2; |
| 550 |
} |
| 551 |
for (int i = 0 ; i<unmaskedData.Length;++i){ |
| 552 |
buffer[offset+i] = (byte)(unmaskedData[i]); |
| 553 |
} |
| 554 |
} |
| 555 |
|
| 556 |
client.Send(buffer); |
| 557 |
|
| 558 |
|
| 559 |
} |
| 560 |
public string EncodeTo64(byte[] toEncode) { |
| 561 |
byte[] toEncodeAsBytes = toEncode; |
| 562 |
string returnValue = System.Convert.ToBase64String(toEncodeAsBytes); |
| 563 |
return returnValue; |
| 564 |
} |
| 565 |
public string EncodeTo64(string toEncode) { |
| 566 |
byte[] toEncodeAsBytes = encoding.GetBytes(toEncode); |
| 567 |
string returnValue = System.Convert.ToBase64String(toEncodeAsBytes); |
| 568 |
return returnValue; |
| 569 |
} |
| 570 |
|
| 571 |
public Client(Socket client){ |
| 572 |
this.client = client; |
| 573 |
client.BeginReceive(buffer, 0, 4096, 0, new AsyncCallback(onReceivedClientData),client); |
| 574 |
|
| 575 |
|
| 576 |
} |
| 577 |
public void close(){ |
| 578 |
this.client.Close(); |
| 579 |
} |
| 580 |
|
| 581 |
public void threadfunc (){ |
| 582 |
|
| 583 |
} |
| 584 |
|
| 585 |
|
| 586 |
public Thread createThread(){ |
| 587 |
thread = new Thread(new ThreadStart(this.threadfunc)); |
| 588 |
return thread; |
| 589 |
} |
| 590 |
|
| 591 |
System.Text.ASCIIEncoding encoding = new System.Text.ASCIIEncoding(); |
| 592 |
|
| 593 |
public void dumpBinary (BitArray b,int length){ |
| 594 |
Console.WriteLine(""); |
| 595 |
int counter = 0; |
| 596 |
for (int i = 0;i<length;++i){ |
| 597 |
if (b[i]){ |
| 598 |
Console.Write(1); |
| 599 |
}else{ |
| 600 |
Console.Write(0); |
| 601 |
} |
| 602 |
if (counter==0){ |
| 603 |
Console.Write(" "); |
| 604 |
} |
| 605 |
counter = (counter+1)%4; |
| 606 |
} |
| 607 |
Console.WriteLine(""); |
| 608 |
} |
| 609 |
|
| 610 |
public void dump (byte [] b,int size){ |
| 611 |
Console.WriteLine("{0} bytes received",size); |
| 612 |
int offset = 0; |
| 613 |
|
| 614 |
while (offset<size){ |
| 615 |
Console.Write ("{0:X2} ",b[offset]); |
| 616 |
|
| 617 |
if (offset>0&&offset%16==0){ |
| 618 |
|
| 619 |
Console.Write(encoding.GetString(b,offset-16,16)); |
| 620 |
|
| 621 |
Console.WriteLine(); |
| 622 |
} |
| 623 |
offset+=1; |
| 624 |
} |
| 625 |
|
| 626 |
Console.WriteLine(); |
| 627 |
|
| 628 |
} |
| 629 |
} |
| 630 |
} |
| 631 |
|
