1 /* +------------------------------------+
2 * | Inspire Internet Relay Chat Daemon |
3 * +------------------------------------+
5 * InspIRCd: (C) 2002-2007 InspIRCd Development Team
6 * See: http://www.inspircd.org/wiki/index.php/Credits
8 * This program is free but copyrighted software; see
9 * the file COPYING for details.
11 * ---------------------------------------------------
15 #include "configreader.h"
16 #include "inspstring.h"
17 #include "socketengine.h"
20 using irc::sockets::OpenTCPSocket;
22 bool InspSocket::Readable()
24 return ((this->state != I_CONNECTING) && (this->WaitingForWriteEvent == false));
27 InspSocket::InspSocket(InspIRCd* SI)
30 this->state = I_DISCONNECTED;
32 this->WaitingForWriteEvent = false;
34 this->IsIOHooked = false;
37 InspSocket::InspSocket(InspIRCd* SI, int newfd, const char* ip)
41 this->state = I_CONNECTED;
42 strlcpy(this->IP,ip,MAXBUF);
43 this->WaitingForWriteEvent = false;
45 this->IsIOHooked = false;
47 this->Instance->SE->AddFd(this);
50 InspSocket::InspSocket(InspIRCd* SI, const std::string &ipaddr, int aport, bool listening, unsigned long maxtime, const std::string &connectbindip)
52 this->cbindip = connectbindip;
55 strlcpy(host,ipaddr.c_str(),MAXBUF);
56 this->WaitingForWriteEvent = false;
57 this->IsIOHooked = false;
61 if ((this->fd = OpenTCPSocket(host)) == ERROR)
64 this->state = I_ERROR;
65 this->OnError(I_ERR_SOCKET);
70 if (!SI->BindSocket(this->fd,aport,(char*)ipaddr.c_str()))
74 this->state = I_ERROR;
75 this->OnError(I_ERR_BIND);
76 this->ClosePending = true;
81 this->state = I_LISTENING;
84 if (!this->Instance->SE->AddFd(this))
87 this->state = I_ERROR;
88 this->OnError(I_ERR_NOMOREFDS);
97 strlcpy(this->host,ipaddr.c_str(),MAXBUF);
102 if (strchr(host,':'))
105 if (inet_pton(AF_INET6, host, &n) < 1)
111 if (inet_aton(host,&n) < 1)
116 if (inet_aton(host,&n) < 1)
121 this->Instance->Log(DEBUG,"BUG: Hostname passed to InspSocket, rather than an IP address!");
124 this->state = I_ERROR;
125 this->OnError(I_ERR_RESOLVE);
130 strlcpy(this->IP,host,MAXBUF);
131 timeout_val = maxtime;
132 if (!this->DoConnect())
136 this->state = I_ERROR;
137 this->OnError(I_ERR_CONNECT);
144 void InspSocket::WantWrite()
146 this->Instance->SE->WantWrite(this);
147 this->WaitingForWriteEvent = true;
150 void InspSocket::SetQueues(int nfd)
152 // attempt to increase socket sendq and recvq as high as its possible
155 setsockopt(nfd,SOL_SOCKET,SO_SNDBUF,(const void *)&sendbuf,sizeof(sendbuf));
156 setsockopt(nfd,SOL_SOCKET,SO_RCVBUF,(const void *)&recvbuf,sizeof(sendbuf));
159 /* Most irc servers require you to specify the ip you want to bind to.
160 * If you dont specify an IP, they rather dumbly bind to the first IP
161 * of the box (e.g. INADDR_ANY). In InspIRCd, we scan thought the IP
162 * addresses we've bound server ports to, and we try and bind our outbound
163 * connections to the first usable non-loopback and non-any IP we find.
164 * This is easier to configure when you have a lot of links and a lot
165 * of servers to configure.
167 bool InspSocket::BindAddr(const std::string &ip)
169 ConfigReader Conf(this->Instance);
170 bool bindfail = false;
171 socklen_t size = sizeof(sockaddr_in);
174 /* Are we looking for a binding to fit an ipv6 host? */
175 if ((ip.empty()) || (ip.find(':') != std::string::npos))
179 while (j < Conf.Enumerate("bind") || (!ip.empty()))
181 std::string IP = ip.empty() ? Conf.ReadValue("bind","address",j) : ip;
182 if (!ip.empty() || Conf.ReadValue("bind","type",j) == "servers")
184 if (!ip.empty() || ((IP != "*") && (IP != "127.0.0.1") && (IP != "") && (IP != "::1")))
186 sockaddr* s = new sockaddr[2];
191 if (inet_pton(AF_INET6, IP.c_str(), &n) > 0)
193 memcpy(&((sockaddr_in6*)s)->sin6_addr, &n, sizeof(n));
194 ((sockaddr_in6*)s)->sin6_family = AF_INET6;
195 size = sizeof(sockaddr_in6);
207 if (inet_aton(IP.c_str(), &n) > 0)
209 ((sockaddr_in*)s)->sin_addr = n;
210 ((sockaddr_in*)s)->sin_family = AF_INET;
221 if (insp_aton(IP.c_str(), &n) > 0)
223 ((sockaddr_in*)s)->sin_addr = n;
224 ((sockaddr_in*)s)->sin_family = AF_INET;
234 if (bind(this->fd, s, size) < 0)
236 this->state = I_ERROR;
237 this->OnError(I_ERR_BIND);
252 bool InspSocket::DoConnect()
254 sockaddr* addr = new sockaddr[2];
255 socklen_t size = sizeof(sockaddr_in);
258 if ((!*this->host) || strchr(this->host, ':'))
263 this->fd = socket(AF_INET6, SOCK_STREAM, 0);
264 if ((this->fd > -1) && ((strstr(this->IP,"::ffff:") != (char*)&this->IP) && (strstr(this->IP,"::FFFF:") != (char*)&this->IP)))
266 if (!this->BindAddr(this->cbindip))
275 this->fd = socket(AF_INET, SOCK_STREAM, 0);
278 if (!this->BindAddr(this->cbindip))
286 this->fd = socket(AF_INET, SOCK_STREAM, 0);
289 if (!this->BindAddr(this->cbindip))
299 this->state = I_ERROR;
300 this->OnError(I_ERR_SOCKET);
309 if (inet_pton(AF_INET6, this->host, &addy) > 0)
311 ((sockaddr_in6*)addr)->sin6_family = AF_INET6;
312 memcpy(&((sockaddr_in6*)addr)->sin6_addr, &addy, sizeof(addy));
313 ((sockaddr_in6*)addr)->sin6_port = htons(this->port);
314 size = sizeof(sockaddr_in6);
320 if (inet_aton(this->host, &addy) > 0)
322 ((sockaddr_in*)addr)->sin_family = AF_INET;
323 ((sockaddr_in*)addr)->sin_addr = addy;
324 ((sockaddr_in*)addr)->sin_port = htons(this->port);
329 if (inet_aton(this->host, &addy) > 0)
331 ((sockaddr_in*)addr)->sin_family = AF_INET;
332 ((sockaddr_in*)addr)->sin_addr = addy;
333 ((sockaddr_in*)addr)->sin_port = htons(this->port);
337 int flags = fcntl(this->fd, F_GETFL, 0);
338 fcntl(this->fd, F_SETFL, flags | O_NONBLOCK);
340 if (connect(this->fd, (sockaddr*)addr, size) == -1)
342 if (errno != EINPROGRESS)
344 this->OnError(I_ERR_CONNECT);
346 this->state = I_ERROR;
350 this->Timeout = new SocketTimeout(this->GetFd(), this->Instance, this, timeout_val, this->Instance->Time());
351 this->Instance->Timers->AddTimer(this->Timeout);
353 this->state = I_CONNECTING;
356 if (!this->Instance->SE->AddFd(this))
358 this->OnError(I_ERR_NOMOREFDS);
360 this->state = I_ERROR;
363 this->SetQueues(this->fd);
369 void InspSocket::Close()
371 /* Save this, so we dont lose it,
372 * otherise on failure, error messages
373 * might be inaccurate.
378 if (this->IsIOHooked && Instance->Config->GetIOHook(this))
382 Instance->Config->GetIOHook(this)->OnRawSocketClose(this->fd);
384 catch (CoreException& modexcept)
386 Instance->Log(DEFAULT,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
390 shutdown(this->fd,2);
396 std::string InspSocket::GetIP()
401 char* InspSocket::Read()
403 if ((fd < 0) || (fd > MAX_DESCRIPTORS))
408 if (this->IsIOHooked)
414 MOD_RESULT = Instance->Config->GetIOHook(this)->OnRawSocketRead(this->fd,this->ibuf,sizeof(this->ibuf),result2);
416 catch (CoreException& modexcept)
418 Instance->Log(DEFAULT,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
432 n = recv(this->fd,this->ibuf,sizeof(this->ibuf),0);
435 if ((n > 0) && (n <= (int)sizeof(this->ibuf)))
450 void InspSocket::MarkAsClosed()
454 // There are two possible outcomes to this function.
455 // It will either write all of the data, or an undefined amount.
456 // If an undefined amount is written the connection has failed
457 // and should be aborted.
458 int InspSocket::Write(const std::string &data)
460 /* Try and append the data to the back of the queue, and send it on its way
462 outbuffer.push_back(data);
463 this->Instance->SE->WantWrite(this);
464 return (!this->FlushWriteBuffer());
467 bool InspSocket::FlushWriteBuffer()
470 if ((this->fd > -1) && (this->state == I_CONNECTED))
472 if (this->IsIOHooked)
474 while (outbuffer.size() && (errno != EAGAIN))
478 int result = Instance->Config->GetIOHook(this)->OnRawSocketWrite(this->fd, outbuffer[0].c_str(), outbuffer[0].length());
481 if ((unsigned int)result >= outbuffer[0].length())
483 outbuffer.pop_front();
487 std::string temp = outbuffer[0].substr(result);
492 else if (((result == -1) && (errno != EAGAIN)) || (result == 0))
494 this->OnError(I_ERR_WRITE);
495 this->state = I_ERROR;
496 this->Instance->SE->DelFd(this);
501 catch (CoreException& modexcept)
503 Instance->Log(DEBUG,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
510 /* If we have multiple lines, try to send them all,
511 * not just the first one -- Brain
513 while (outbuffer.size() && (errno != EAGAIN))
516 int result = write(this->fd,outbuffer[0].c_str(),outbuffer[0].length());
519 if ((unsigned int)result >= outbuffer[0].length())
521 /* The whole block was written (usually a line)
522 * Pop the block off the front of the queue,
523 * dont set errno, because we are clear of errors
524 * and want to try and write the next block too.
526 outbuffer.pop_front();
530 std::string temp = outbuffer[0].substr(result);
532 /* We didnt get the whole line out. arses.
533 * Try again next time, i guess. Set errno,
534 * because we shouldnt be writing any more now,
535 * until the socketengine says its safe to do so.
540 else if ((result == -1) && (errno != EAGAIN))
542 this->OnError(I_ERR_WRITE);
543 this->state = I_ERROR;
544 this->Instance->SE->DelFd(this);
552 if ((errno == EAGAIN) && (fd > -1))
554 this->Instance->SE->WantWrite(this);
560 void SocketTimeout::Tick(time_t now)
562 if (ServerInstance->SE->GetRef(this->sfd) != this->sock)
565 if (this->sock->state == I_CONNECTING)
567 // for non-listening sockets, the timeout can occur
568 // which causes termination of the connection after
569 // the given number of seconds without a successful
571 this->sock->OnTimeout();
572 this->sock->OnError(I_ERR_TIMEOUT);
573 this->sock->timeout = true;
574 ServerInstance->SE->DelFd(this->sock);
575 /* NOTE: We must set this AFTER DelFd, as we added
576 * this socket whilst writeable. This means that we
577 * must DELETE the socket whilst writeable too!
579 this->sock->state = I_ERROR;
586 this->sock->Timeout = NULL;
590 bool InspSocket::Poll()
592 if (this->Instance->SE->GetRef(this->fd) != this)
597 if ((fd < 0) || (fd > MAX_DESCRIPTORS))
603 /* Our socket was in write-state, so delete it and re-add it
608 this->Instance->SE->DelFd(this);
609 this->SetState(I_CONNECTED);
610 if (!this->Instance->SE->AddFd(this))
613 if (Instance->Config->GetIOHook(this))
617 Instance->Config->GetIOHook(this)->OnRawSocketConnect(this->fd);
619 catch (CoreException& modexcept)
621 Instance->Log(DEBUG,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
624 return this->OnConnected();
628 sockaddr* client = new sockaddr[2];
629 length = sizeof (sockaddr_in);
632 if ((!*this->host) || strchr(this->host, ':'))
633 length = sizeof(sockaddr_in6);
635 incoming = accept (this->fd, client, &length);
637 if ((!*this->host) || strchr(this->host, ':'))
640 recvip = inet_ntop(AF_INET6, &((sockaddr_in6*)client)->sin6_addr, buf, sizeof(buf));
644 recvip = inet_ntoa(((sockaddr_in*)client)->sin_addr);
647 recvip = inet_ntoa(((sockaddr_in*)client)->sin_addr);
649 this->OnIncomingConnection(incoming, (char*)recvip.c_str());
651 if (this->IsIOHooked)
655 Instance->Config->GetIOHook(this)->OnRawSocketAccept(incoming, recvip.c_str(), this->port);
657 catch (CoreException& modexcept)
659 Instance->Log(DEBUG,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
663 this->SetQueues(incoming);
670 /* Process the read event */
671 return this->OnDataReady();
679 void InspSocket::SetState(InspSocketState s)
684 InspSocketState InspSocket::GetState()
689 int InspSocket::GetFd()
694 bool InspSocket::OnConnected() { return true; }
695 void InspSocket::OnError(InspSocketError e) { return; }
696 int InspSocket::OnDisconnect() { return 0; }
697 int InspSocket::OnIncomingConnection(int newfd, char* ip) { return 0; }
698 bool InspSocket::OnDataReady() { return true; }
699 bool InspSocket::OnWriteReady() { return true; }
700 void InspSocket::OnTimeout() { return; }
701 void InspSocket::OnClose() { return; }
703 InspSocket::~InspSocket()
708 Instance->Timers->DelTimer(Timeout);
713 void InspSocket::HandleEvent(EventType et, int errornum)
718 this->Instance->SE->DelFd(this);
726 this->Instance->SE->DelFd(this);
733 if (this->WaitingForWriteEvent)
735 this->WaitingForWriteEvent = false;
736 if (!this->OnWriteReady())
738 this->Instance->SE->DelFd(this);
744 if (this->state == I_CONNECTING)
746 /* This might look wrong as if we should be actually calling
747 * with EVENT_WRITE, but trust me it is correct. There are some
748 * writeability-state things in the read code, because of how
749 * InspSocket used to work regarding write buffering in previous
750 * versions of InspIRCd. - Brain
752 this->HandleEvent(EVENT_READ);
757 if (this->FlushWriteBuffer())
759 this->Instance->SE->DelFd(this);