src/inspsocket.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2007 InspIRCd Development Team
   6  * See: http://www.inspircd.org/wiki/index.php/Credits
   7  *
   8  * This program is free but copyrighted software; see
   9  *            the file COPYING for details.
  10  *
  11  * ---------------------------------------------------
  12  */
  13
  14 #include "socket.h"
  15 #include "configreader.h"
  16 #include "inspstring.h"
  17 #include "socketengine.h"
  18 #include "inspircd.h"
  19
  20 using irc::sockets::OpenTCPSocket;
  21
  22 bool InspSocket::Readable()
  23 {
  24         return ((this->state != I_CONNECTING) && (this->WaitingForWriteEvent == false));
  25 }
  26
  27 InspSocket::InspSocket(InspIRCd* SI)
  28 {
  29         this->Timeout = NULL;
  30         this->state = I_DISCONNECTED;
  31         this->fd = -1;
  32         this->WaitingForWriteEvent = false;
  33         this->Instance = SI;
  34         this->IsIOHooked = false;
  35 }
  36
  37 InspSocket::InspSocket(InspIRCd* SI, int newfd, const char* ip)
  38 {
  39         this->Timeout = NULL;
  40         this->fd = newfd;
  41         this->state = I_CONNECTED;
  42         strlcpy(this->IP,ip,MAXBUF);
  43         this->WaitingForWriteEvent = false;
  44         this->Instance = SI;
  45         this->IsIOHooked = false;
  46         if (this->fd > -1)
  47                 this->Instance->SE->AddFd(this);
  48 }
  49
  50 InspSocket::InspSocket(InspIRCd* SI, const std::string &ipaddr, int aport, bool listening, unsigned long maxtime, const std::string &connectbindip)
  51 {
  52         this->cbindip = connectbindip;
  53         this->fd = -1;
  54         this->Instance = SI;
  55         strlcpy(host,ipaddr.c_str(),MAXBUF);
  56         this->WaitingForWriteEvent = false;
  57         this->IsIOHooked = false;
  58         this->Timeout = NULL;
  59         if (listening)
  60         {
  61                 if ((this->fd = OpenTCPSocket(host)) == ERROR)
  62                 {
  63                         this->fd = -1;
  64                         this->state = I_ERROR;
  65                         this->OnError(I_ERR_SOCKET);
  66                         return;
  67                 }
  68                 else
  69                 {
  70                         if (!SI->BindSocket(this->fd,aport,(char*)ipaddr.c_str()))
  71                         {
  72                                 this->Close();
  73                                 this->fd = -1;
  74                                 this->state = I_ERROR;
  75                                 this->OnError(I_ERR_BIND);
  76                                 this->ClosePending = true;
  77                                 return;
  78                         }
  79                         else
  80                         {
  81                                 this->state = I_LISTENING;
  82                                 this->port = aport;
  83                                 if (this->fd > -1)
  84                                 {
  85                                         if (!this->Instance->SE->AddFd(this))
  86                                         {
  87                                                 this->Close();
  88                                                 this->state = I_ERROR;
  89                                                 this->OnError(I_ERR_NOMOREFDS);
  90                                         }
  91                                 }
  92                                 return;
  93                         }
  94                 }
  95         }
  96         else
  97         {
  98                 strlcpy(this->host,ipaddr.c_str(),MAXBUF);
  99                 this->port = aport;
 100
 101                 bool ipvalid = true;
 102 #ifdef IPV6
 103                 if (strchr(host,':'))
 104                 {
 105                         in6_addr n;
 106                         if (inet_pton(AF_INET6, host, &n) < 1)
 107                                 ipvalid = false;
 108                 }
 109                 else
 110                 {
 111                         in_addr n;
 112                         if (inet_aton(host,&n) < 1)
 113                                 ipvalid = false;
 114                 }
 115 #else
 116                 in_addr n;
 117                 if (inet_aton(host,&n) < 1)
 118                         ipvalid = false;
 119 #endif
 120                 if (!ipvalid)
 121                 {
 122                         this->Instance->Log(DEBUG,"BUG: Hostname passed to InspSocket, rather than an IP address!");
 123                         this->OnError(I_ERR_CONNECT);
 124                         this->Close();
 125                         this->fd = -1;
 126                         this->state = I_ERROR;
 127                         return;
 128                 }
 129                 else
 130                 {
 131                         strlcpy(this->IP,host,MAXBUF);
 132                         timeout_val = maxtime;
 133                         if (!this->DoConnect())
 134                         {
 135                                 this->OnError(I_ERR_CONNECT);
 136                                 this->Close();
 137                                 this->fd = -1;
 138                                 this->state = I_ERROR;
 139                                 return;
 140                         }
 141                 }
 142         }
 143 }
 144
 145 void InspSocket::WantWrite()
 146 {
 147         this->Instance->SE->WantWrite(this);
 148         this->WaitingForWriteEvent = true;
 149 }
 150
 151 void InspSocket::SetQueues(int nfd)
 152 {
 153         // attempt to increase socket sendq and recvq as high as its possible
 154         int sendbuf = 32768;
 155         int recvbuf = 32768;
 156         setsockopt(nfd,SOL_SOCKET,SO_SNDBUF,(const char *)&sendbuf,sizeof(sendbuf));
 157         setsockopt(nfd,SOL_SOCKET,SO_RCVBUF,(const char *)&recvbuf,sizeof(sendbuf));
 158 }
 159
 160 /* Most irc servers require you to specify the ip you want to bind to.
 161  * If you dont specify an IP, they rather dumbly bind to the first IP
 162  * of the box (e.g. INADDR_ANY). In InspIRCd, we scan thought the IP
 163  * addresses we've bound server ports to, and we try and bind our outbound
 164  * connections to the first usable non-loopback and non-any IP we find.
 165  * This is easier to configure when you have a lot of links and a lot
 166  * of servers to configure.
 167  */
 168 bool InspSocket::BindAddr(const std::string &ip)
 169 {
 170         ConfigReader Conf(this->Instance);
 171         socklen_t size = sizeof(sockaddr_in);
 172 #ifdef IPV6
 173         bool v6 = false;
 174         /* Are we looking for a binding to fit an ipv6 host? */
 175         if ((ip.empty()) || (ip.find(':') != std::string::npos))
 176                 v6 = true;
 177 #endif
 178         int j = 0;
 179         while (j < Conf.Enumerate("bind") || (!ip.empty()))
 180         {
 181                 std::string IP = ip.empty() ? Conf.ReadValue("bind","address",j) : ip;
 182                 if (!ip.empty() || Conf.ReadValue("bind","type",j) == "servers")
 183                 {
 184                         if (!ip.empty() || ((IP != "*") && (IP != "127.0.0.1") && (IP != "") && (IP != "::1")))
 185                         {
 186                                 sockaddr* s = new sockaddr[2];
 187 #ifdef IPV6
 188                                 if (v6)
 189                                 {
 190                                         in6_addr n;
 191                                         if (inet_pton(AF_INET6, IP.c_str(), &n) > 0)
 192                                         {
 193                                                 memcpy(&((sockaddr_in6*)s)->sin6_addr, &n, sizeof(n));
 194                                                 ((sockaddr_in6*)s)->sin6_port = 0;
 195                                                 ((sockaddr_in6*)s)->sin6_family = AF_INET6;
 196                                                 size = sizeof(sockaddr_in6);
 197                                         }
 198                                         else
 199                                         {
 200                                                 delete[] s;
 201                                                 j++;
 202                                                 continue;
 203                                         }
 204                                 }
 205                                 else
 206                                 {
 207                                         in_addr n;
 208                                         if (inet_aton(IP.c_str(), &n) > 0)
 209                                         {
 210                                                 ((sockaddr_in*)s)->sin_addr = n;
 211                                                 ((sockaddr_in*)s)->sin_port = 0;
 212                                                 ((sockaddr_in*)s)->sin_family = AF_INET;
 213                                         }
 214                                         else
 215                                         {
 216                                                 delete[] s;
 217                                                 j++;
 218                                                 continue;
 219                                         }
 220                                 }
 221 #else
 222                                 in_addr n;
 223                                 if (insp_aton(IP.c_str(), &n) > 0)
 224                                 {
 225                                         ((sockaddr_in*)s)->sin_addr = n;
 226                                         ((sockaddr_in*)s)->sin_port = 0;
 227                                         ((sockaddr_in*)s)->sin_family = AF_INET;
 228                                 }
 229                                 else
 230                                 {
 231                                         delete[] s;
 232                                         j++;
 233                                         continue;
 234                                 }
 235 #endif
 236
 237                                 if (bind(this->fd, s, size) < 0)
 238                                 {
 239                                         this->state = I_ERROR;
 240                                         this->OnError(I_ERR_BIND);
 241                                         this->fd = -1;
 242                                         delete[] s;
 243                                         return false;
 244                                 }
 245
 246                                 delete[] s;
 247                                 return true;
 248                         }
 249                 }
 250                 j++;
 251         }
 252         return true;
 253 }
 254
 255 bool InspSocket::DoConnect()
 256 {
 257         sockaddr* addr = new sockaddr[2];
 258         socklen_t size = sizeof(sockaddr_in);
 259 #ifdef IPV6
 260         bool v6 = false;
 261         if ((!*this->host) || strchr(this->host, ':'))
 262                 v6 = true;
 263
 264         if (v6)
 265         {
 266                 this->fd = socket(AF_INET6, SOCK_STREAM, 0);
 267                 if ((this->fd > -1) && ((strstr(this->IP,"::ffff:") != (char*)&this->IP) && (strstr(this->IP,"::FFFF:") != (char*)&this->IP)))
 268                 {
 269                         if (!this->BindAddr(this->cbindip))
 270                         {
 271                                 delete[] addr;
 272                                 return false;
 273                         }
 274                 }
 275         }
 276         else
 277         {
 278                 this->fd = socket(AF_INET, SOCK_STREAM, 0);
 279                 if (this->fd > -1)
 280                 {
 281                         if (!this->BindAddr(this->cbindip))
 282                         {
 283                                 delete[] addr;
 284                                 return false;
 285                         }
 286                 }
 287         }
 288 #else
 289         this->fd = socket(AF_INET, SOCK_STREAM, 0);
 290         if (this->fd > -1)
 291         {
 292                 if (!this->BindAddr(this->cbindip))
 293                 {
 294                         delete[] addr;
 295                         return false;
 296                 }
 297         }
 298 #endif
 299
 300         if (this->fd == -1)
 301         {
 302                 this->state = I_ERROR;
 303                 this->OnError(I_ERR_SOCKET);
 304                 delete[] addr;
 305                 return false;
 306         }
 307
 308 #ifdef IPV6
 309         if (v6)
 310         {
 311                 in6_addr addy;
 312                 if (inet_pton(AF_INET6, this->host, &addy) > 0)
 313                 {
 314                         ((sockaddr_in6*)addr)->sin6_family = AF_INET6;
 315                         memcpy(&((sockaddr_in6*)addr)->sin6_addr, &addy, sizeof(addy));
 316                         ((sockaddr_in6*)addr)->sin6_port = htons(this->port);
 317                         size = sizeof(sockaddr_in6);
 318                 }
 319         }
 320         else
 321         {
 322                 in_addr addy;
 323                 if (inet_aton(this->host, &addy) > 0)
 324                 {
 325                         ((sockaddr_in*)addr)->sin_family = AF_INET;
 326                         ((sockaddr_in*)addr)->sin_addr = addy;
 327                         ((sockaddr_in*)addr)->sin_port = htons(this->port);
 328                 }
 329         }
 330 #else
 331         in_addr addy;
 332         if (inet_aton(this->host, &addy) > 0)
 333         {
 334                 ((sockaddr_in*)addr)->sin_family = AF_INET;
 335                 ((sockaddr_in*)addr)->sin_addr = addy;
 336                 ((sockaddr_in*)addr)->sin_port = htons(this->port);
 337         }
 338 #endif
 339 #ifndef WIN32
 340         int flags = fcntl(this->fd, F_GETFL, 0);
 341         fcntl(this->fd, F_SETFL, flags | O_NONBLOCK);
 342 #else
 343         unsigned long flags = 0;
 344         ioctlsocket(this->fd, FIONBIO, &flags);
 345 #endif
 346         if (connect(this->fd, (sockaddr*)addr, size) == -1)
 347         {
 348                 if (errno != EINPROGRESS)
 349                 {
 350                         this->OnError(I_ERR_CONNECT);
 351                         this->Close();
 352                         this->state = I_ERROR;
 353                         return false;
 354                 }
 355
 356                 this->Timeout = new SocketTimeout(this->GetFd(), this->Instance, this, timeout_val, this->Instance->Time());
 357                 this->Instance->Timers->AddTimer(this->Timeout);
 358         }
 359         this->state = I_CONNECTING;
 360         if (this->fd > -1)
 361         {
 362                 if (!this->Instance->SE->AddFd(this))
 363                 {
 364                         this->OnError(I_ERR_NOMOREFDS);
 365                         this->Close();
 366                         this->state = I_ERROR;
 367                         return false;
 368                 }
 369                 this->SetQueues(this->fd);
 370         }
 371         return true;
 372 }
 373
 374
 375 void InspSocket::Close()
 376 {
 377         /* Save this, so we dont lose it,
 378          * otherise on failure, error messages
 379          * might be inaccurate.
 380          */
 381         int save = errno;
 382         if (this->fd > -1)
 383         {
 384                 if (this->IsIOHooked && Instance->Config->GetIOHook(this))
 385                 {
 386                         try
 387                         {
 388                                 Instance->Config->GetIOHook(this)->OnRawSocketClose(this->fd);
 389                         }
 390                         catch (CoreException& modexcept)
 391                         {
 392                                 Instance->Log(DEFAULT,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
 393                         }
 394                 }
 395                 this->OnClose();
 396                 shutdown(this->fd,2);
 397                 close(this->fd);
 398         }
 399         errno = save;
 400 }
 401
 402 std::string InspSocket::GetIP()
 403 {
 404         return this->IP;
 405 }
 406
 407 char* InspSocket::Read()
 408 {
 409 #ifdef WINDOWS
 410         if ((fd < 0) || (m_internalFd > MAX_DESCRIPTORS))
 411 #else
 412         if ((fd < 0) || (fd > MAX_DESCRIPTORS))
 413 #endif
 414                 return NULL;
 415
 416         int n = 0;
 417
 418         if (this->IsIOHooked)
 419         {
 420                 int result2 = 0;
 421                 int MOD_RESULT = 0;
 422                 try
 423                 {
 424                         MOD_RESULT = Instance->Config->GetIOHook(this)->OnRawSocketRead(this->fd,this->ibuf,sizeof(this->ibuf),result2);
 425                 }
 426                 catch (CoreException& modexcept)
 427                 {
 428                         Instance->Log(DEFAULT,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
 429                 }
 430                 if (MOD_RESULT < 0)
 431                 {
 432                         n = -1;
 433                         errno = EAGAIN;
 434                 }
 435                 else
 436                 {
 437                         n = result2;
 438                 }
 439         }
 440         else
 441         {
 442                 n = recv(this->fd,this->ibuf,sizeof(this->ibuf),0);
 443         }
 444
 445         if ((n > 0) && (n <= (int)sizeof(this->ibuf)))
 446         {
 447                 ibuf[n] = 0;
 448                 return ibuf;
 449         }
 450         else
 451         {
 452                 int err = errno;
 453                 if (err == EAGAIN)
 454                         return "";
 455                 else
 456                         return NULL;
 457         }
 458 }
 459
 460 void InspSocket::MarkAsClosed()
 461 {
 462 }
 463
 464 // There are two possible outcomes to this function.
 465 // It will either write all of the data, or an undefined amount.
 466 // If an undefined amount is written the connection has failed
 467 // and should be aborted.
 468 int InspSocket::Write(const std::string &data)
 469 {
 470         /* Try and append the data to the back of the queue, and send it on its way
 471          */
 472         outbuffer.push_back(data);
 473         this->Instance->SE->WantWrite(this);
 474         return (!this->FlushWriteBuffer());
 475 }
 476
 477 bool InspSocket::FlushWriteBuffer()
 478 {
 479         errno = 0;
 480         if ((this->fd > -1) && (this->state == I_CONNECTED))
 481         {
 482                 if (this->IsIOHooked)
 483                 {
 484                         while (outbuffer.size() && (errno != EAGAIN))
 485                         {
 486                                 try
 487                                 {
 488                                         int result = Instance->Config->GetIOHook(this)->OnRawSocketWrite(this->fd, outbuffer[0].c_str(), outbuffer[0].length());
 489                                         if (result > 0)
 490                                         {
 491                                                 if ((unsigned int)result >= outbuffer[0].length())
 492                                                 {
 493                                                         outbuffer.pop_front();
 494                                                 }
 495                                                 else
 496                                                 {
 497                                                         std::string temp = outbuffer[0].substr(result);
 498                                                         outbuffer[0] = temp;
 499                                                         errno = EAGAIN;
 500                                                 }
 501                                         }
 502                                         else if (((result == -1) && (errno != EAGAIN)) || (result == 0))
 503                                         {
 504                                                 this->OnError(I_ERR_WRITE);
 505                                                 this->state = I_ERROR;
 506                                                 this->Instance->SE->DelFd(this);
 507                                                 this->Close();
 508                                                 return true;
 509                                         }
 510                                 }
 511                                 catch (CoreException& modexcept)
 512                                 {
 513                                         Instance->Log(DEBUG,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
 514                                         return true;
 515                                 }
 516                         }
 517                 }
 518                 else
 519                 {
 520                         /* If we have multiple lines, try to send them all,
 521                          * not just the first one -- Brain
 522                          */
 523                         while (outbuffer.size() && (errno != EAGAIN))
 524                         {
 525                                 /* Send a line */
 526 #ifndef WIN32
 527                                 int result = write(this->fd,outbuffer[0].c_str(),outbuffer[0].length());
 528 #else
 529                                 int result = send(this->fd,outbuffer[0].c_str(),outbuffer[0].length(), 0);
 530 #endif
 531                                 if (result > 0)
 532                                 {
 533                                         if ((unsigned int)result >= outbuffer[0].length())
 534                                         {
 535                                                 /* The whole block was written (usually a line)
 536                                                  * Pop the block off the front of the queue,
 537                                                  * dont set errno, because we are clear of errors
 538                                                  * and want to try and write the next block too.
 539                                                  */
 540                                                 outbuffer.pop_front();
 541                                         }
 542                                         else
 543                                         {
 544                                                 std::string temp = outbuffer[0].substr(result);
 545                                                 outbuffer[0] = temp;
 546                                                 /* We didnt get the whole line out. arses.
 547                                                  * Try again next time, i guess. Set errno,
 548                                                  * because we shouldnt be writing any more now,
 549                                                  * until the socketengine says its safe to do so.
 550                                                  */
 551                                                 errno = EAGAIN;
 552                                         }
 553                                 }
 554                                 else if ((result == -1) && (errno != EAGAIN))
 555                                 {
 556                                         this->OnError(I_ERR_WRITE);
 557                                         this->state = I_ERROR;
 558                                         this->Instance->SE->DelFd(this);
 559                                         this->Close();
 560                                         return true;
 561                                 }
 562                         }
 563                 }
 564         }
 565
 566         if ((errno == EAGAIN) && (fd > -1))
 567         {
 568                 this->Instance->SE->WantWrite(this);
 569         }
 570
 571         return (fd < 0);
 572 }
 573
 574 void SocketTimeout::Tick(time_t now)
 575 {
 576         if (ServerInstance->SE->GetRef(this->sfd) != this->sock)
 577                 return;
 578
 579         if (this->sock->state == I_CONNECTING)
 580         {
 581                 // for non-listening sockets, the timeout can occur
 582                 // which causes termination of the connection after
 583                 // the given number of seconds without a successful
 584                 // connection.
 585                 this->sock->OnTimeout();
 586                 this->sock->OnError(I_ERR_TIMEOUT);
 587                 this->sock->timeout = true;
 588
 589                 /* NOTE: We must set this AFTER DelFd, as we added
 590                  * this socket whilst writeable. This means that we
 591                  * must DELETE the socket whilst writeable too!
 592                  */
 593                 this->sock->state = I_ERROR;
 594
 595                 if (ServerInstance->SocketCull.find(this->sock) == ServerInstance->SocketCull.end())
 596                         ServerInstance->SocketCull[this->sock] = this->sock;
 597         }
 598
 599         this->sock->Timeout = NULL;
 600 }
 601
 602 bool InspSocket::Poll()
 603 {
 604 #ifdef WINDOWS
 605         if(Instance->SE->GetRef(this->fd) != this)
 606                 return false;
 607         int incoming = -1;
 608 #else
 609         if (this->Instance->SE->GetRef(this->fd) != this)
 610                 return false;
 611
 612         int incoming = -1;
 613
 614         if ((fd < 0) || (fd > MAX_DESCRIPTORS))
 615                 return false;
 616 #endif
 617         switch (this->state)
 618         {
 619                 case I_CONNECTING:
 620                         /* Our socket was in write-state, so delete it and re-add it
 621                          * in read-state.
 622                          */
 623 #ifndef WINDOWS
 624                         if (this->fd > -1)
 625                         {
 626                                 this->Instance->SE->DelFd(this);
 627                                 this->SetState(I_CONNECTED);
 628                                 if (!this->Instance->SE->AddFd(this))
 629                                         return false;
 630                         }
 631 #else
 632                         this->SetState(I_CONNECTED);
 633 #endif
 634                         if (Instance->Config->GetIOHook(this))
 635                         {
 636                                 try
 637                                 {
 638                                         Instance->Config->GetIOHook(this)->OnRawSocketConnect(this->fd);
 639                                 }
 640                                 catch (CoreException& modexcept)
 641                                 {
 642                                         Instance->Log(DEBUG,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
 643                                 }
 644                         }
 645                         return this->OnConnected();
 646                 break;
 647                 case I_LISTENING:
 648                 {
 649                         sockaddr* client = new sockaddr[2];
 650                         length = sizeof (sockaddr_in);
 651                         std::string recvip;
 652 #ifdef IPV6
 653                         if ((!*this->host) || strchr(this->host, ':'))
 654                                 length = sizeof(sockaddr_in6);
 655 #endif
 656                         incoming = _accept (this->fd, client, &length);
 657 #ifdef IPV6
 658                         if ((!*this->host) || strchr(this->host, ':'))
 659                         {
 660                                 char buf[1024];
 661                                 recvip = inet_ntop(AF_INET6, &((sockaddr_in6*)client)->sin6_addr, buf, sizeof(buf));
 662                         }
 663                         else
 664                         {
 665                                 recvip = inet_ntoa(((sockaddr_in*)client)->sin_addr);
 666                         }
 667 #else
 668                         recvip = inet_ntoa(((sockaddr_in*)client)->sin_addr);
 669 #endif
 670                         this->OnIncomingConnection(incoming, (char*)recvip.c_str());
 671
 672                         if (this->IsIOHooked)
 673                         {
 674                                 try
 675                                 {
 676                                         Instance->Config->GetIOHook(this)->OnRawSocketAccept(incoming, recvip.c_str(), this->port);
 677                                 }
 678                                 catch (CoreException& modexcept)
 679                                 {
 680                                         Instance->Log(DEBUG,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
 681                                 }
 682                         }
 683
 684                         this->SetQueues(incoming);
 685
 686                         delete[] client;
 687                         return true;
 688                 }
 689                 break;
 690                 case I_CONNECTED:
 691                         /* Process the read event */
 692                         return this->OnDataReady();
 693                 break;
 694                 default:
 695                 break;
 696         }
 697         return true;
 698 }
 699
 700 void InspSocket::SetState(InspSocketState s)
 701 {
 702         this->state = s;
 703 }
 704
 705 InspSocketState InspSocket::GetState()
 706 {
 707         return this->state;
 708 }
 709
 710 int InspSocket::GetFd()
 711 {
 712         return this->fd;
 713 }
 714
 715 bool InspSocket::OnConnected() { return true; }
 716 void InspSocket::OnError(InspSocketError e) { return; }
 717 int InspSocket::OnDisconnect() { return 0; }
 718 int InspSocket::OnIncomingConnection(int newfd, char* ip) { return 0; }
 719 bool InspSocket::OnDataReady() { return true; }
 720 bool InspSocket::OnWriteReady() { return true; }
 721 void InspSocket::OnTimeout() { return; }
 722 void InspSocket::OnClose() { return; }
 723
 724 InspSocket::~InspSocket()
 725 {
 726         this->Close();
 727         if (Timeout)
 728         {
 729                 Instance->Timers->DelTimer(Timeout);
 730                 Timeout = NULL;
 731         }
 732 }
 733
 734 void InspSocket::HandleEvent(EventType et, int errornum)
 735 {
 736         switch (et)
 737         {
 738                 case EVENT_ERROR:
 739                         switch (errornum)
 740                         {
 741                                 case ETIMEDOUT:
 742                                         this->OnError(I_ERR_TIMEOUT);
 743                                 break;
 744                                 case ECONNREFUSED:
 745                                 case 0:
 746                                         this->OnError(this->state == I_CONNECTING ? I_ERR_CONNECT : I_ERR_WRITE);
 747                                 break;
 748                                 case EADDRINUSE:
 749                                         this->OnError(I_ERR_BIND);
 750                                 break;
 751                                 case EPIPE:
 752                                 case EIO:
 753                                         this->OnError(I_ERR_WRITE);
 754                                 break;
 755                         }
 756                         if (this->Instance->SocketCull.find(this) == this->Instance->SocketCull.end())
 757                                 this->Instance->SocketCull[this] = this;
 758                         return;
 759                 break;
 760                 case EVENT_READ:
 761                         if (!this->Poll())
 762                         {
 763                                 if (this->Instance->SocketCull.find(this) == this->Instance->SocketCull.end())
 764                                         this->Instance->SocketCull[this] = this;
 765                                 return;
 766                         }
 767                 break;
 768                 case EVENT_WRITE:
 769                         if (this->WaitingForWriteEvent)
 770                         {
 771                                 this->WaitingForWriteEvent = false;
 772                                 if (!this->OnWriteReady())
 773                                 {
 774                                         if (this->Instance->SocketCull.find(this) == this->Instance->SocketCull.end())
 775                                                 this->Instance->SocketCull[this] = this;
 776                                         return;
 777                                 }
 778                         }
 779                         if (this->state == I_CONNECTING)
 780                         {
 781                                 /* This might look wrong as if we should be actually calling
 782                                  * with EVENT_WRITE, but trust me it is correct. There are some
 783                                  * writeability-state things in the read code, because of how
 784                                  * InspSocket used to work regarding write buffering in previous
 785                                  * versions of InspIRCd. - Brain
 786                                  */
 787                                 this->HandleEvent(EVENT_READ);
 788                                 return;
 789                         }
 790                         else
 791                         {
 792                                 if (this->FlushWriteBuffer())
 793                                 {
 794                                         if (this->Instance->SocketCull.find(this) == this->Instance->SocketCull.end())
 795                                                 this->Instance->SocketCull[this] = this;
 796                                         return;
 797                                 }
 798                         }
 799                 break;
 800         }
 801 }
 802