X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Finspsocket.cpp;h=e00429bbafc0a36ab90e349a1751a62f41155b1a;hb=e2b0f3dc9ef4d56c71d7abda13e6139ca092e387;hp=c12494503214fe35005aed2af8ea2e6916f18fef;hpb=17fe68de7265f7bb1007255d80eb3d310ebd4e53;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/src/inspsocket.cpp b/src/inspsocket.cpp index c12494503..e00429bba 100644 --- a/src/inspsocket.cpp +++ b/src/inspsocket.cpp @@ -1,780 +1,576 @@ -/* +------------------------------------+ - * | Inspire Internet Relay Chat Daemon | - * +------------------------------------+ +/* + * InspIRCd -- Internet Relay Chat Daemon + * + * Copyright (C) 2020 Matt Schatz + * Copyright (C) 2019 linuxdaemon + * Copyright (C) 2018 Dylan Frank + * Copyright (C) 2013-2016 Attila Molnar + * Copyright (C) 2013, 2017-2020 Sadie Powell + * Copyright (C) 2013 Adam + * Copyright (C) 2012 Robby + * Copyright (C) 2009-2010 Daniel De Graaf + * Copyright (C) 2007-2008 Robin Burchell + * Copyright (C) 2007 John Brooks + * Copyright (C) 2007 Dennis Friis + * Copyright (C) 2006-2007 Craig Edwards + * Copyright (C) 2006 Oliver Lupton * - * InspIRCd: (C) 2002-2008 InspIRCd Development Team - * See: http://www.inspircd.org/wiki/index.php/Credits + * This file is part of InspIRCd. InspIRCd is free software: you can + * redistribute it and/or modify it under the terms of the GNU General Public + * License as published by the Free Software Foundation, version 2. * - * This program is free but copyrighted software; see - * the file COPYING for details. + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS + * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more + * details. * - * --------------------------------------------------- + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . */ -/* $Core: libIRCDinspsocket */ -#include "socket.h" -#include "inspstring.h" -#include "socketengine.h" #include "inspircd.h" +#include "iohook.h" -using irc::sockets::OpenTCPSocket; - -bool BufferedSocket::Readable() +static IOHook* GetNextHook(IOHook* hook) { - return ((this->state != I_CONNECTING) && (this->WaitingForWriteEvent == false)); + IOHookMiddle* const iohm = IOHookMiddle::ToMiddleHook(hook); + if (iohm) + return iohm->GetNextHook(); + return NULL; } -BufferedSocket::BufferedSocket(InspIRCd* SI) +BufferedSocket::BufferedSocket() { - this->Timeout = NULL; - this->state = I_DISCONNECTED; - this->fd = -1; - this->WaitingForWriteEvent = false; - this->Instance = SI; - this->IsIOHooked = false; + Timeout = NULL; + state = I_ERROR; } -BufferedSocket::BufferedSocket(InspIRCd* SI, int newfd, const char* ip) +BufferedSocket::BufferedSocket(int newfd) { - this->Timeout = NULL; + Timeout = NULL; this->fd = newfd; this->state = I_CONNECTED; - strlcpy(this->IP,ip,MAXBUF); - this->WaitingForWriteEvent = false; - this->Instance = SI; - this->IsIOHooked = false; - if (this->fd > -1) - this->Instance->SE->AddFd(this); + if (HasFd()) + SocketEngine::AddFd(this, FD_WANT_FAST_READ | FD_WANT_EDGE_WRITE); } -BufferedSocket::BufferedSocket(InspIRCd* SI, const std::string &ipaddr, int aport, bool listening, unsigned long maxtime, const std::string &connectbindip) +void BufferedSocket::DoConnect(const irc::sockets::sockaddrs& dest, const irc::sockets::sockaddrs& bind, unsigned int maxtime) { - this->cbindip = connectbindip; - this->fd = -1; - this->Instance = SI; - strlcpy(host,ipaddr.c_str(),MAXBUF); - this->WaitingForWriteEvent = false; - this->IsIOHooked = false; - this->Timeout = NULL; - if (listening) + BufferedSocketError err = BeginConnect(dest, bind, maxtime); + if (err != I_ERR_NONE) { - if ((this->fd = OpenTCPSocket(host)) == ERROR) - { - this->fd = -1; - this->state = I_ERROR; - this->OnError(I_ERR_SOCKET); - return; - } - else - { - if (!SI->BindSocket(this->fd,aport,(char*)ipaddr.c_str())) - { - this->Close(); - this->fd = -1; - this->state = I_ERROR; - this->OnError(I_ERR_BIND); - this->ClosePending = true; - return; - } - else - { - this->state = I_LISTENING; - this->port = aport; - if (this->fd > -1) - { - if (!this->Instance->SE->AddFd(this)) - { - this->Close(); - this->state = I_ERROR; - this->OnError(I_ERR_NOMOREFDS); - } - } - return; - } - } - } - else - { - strlcpy(this->host,ipaddr.c_str(),MAXBUF); - this->port = aport; - - bool ipvalid = true; -#ifdef IPV6 - if (strchr(host,':')) - { - in6_addr n; - if (inet_pton(AF_INET6, host, &n) < 1) - ipvalid = false; - } - else -#endif - { - in_addr n; - if (inet_aton(host,&n) < 1) - ipvalid = false; - } - if (!ipvalid) - { - this->Instance->Logs->Log("SOCKET", DEBUG,"BUG: Hostname passed to BufferedSocket, rather than an IP address!"); - this->OnError(I_ERR_CONNECT); - this->Close(); - this->fd = -1; - this->state = I_ERROR; - return; - } - else - { - strlcpy(this->IP,host,MAXBUF); - timeout_val = maxtime; - if (!this->DoConnect()) - { - this->OnError(I_ERR_CONNECT); - this->Close(); - this->fd = -1; - this->state = I_ERROR; - return; - } - } + state = I_ERROR; + SetError(SocketEngine::LastError()); + OnError(err); } } -void BufferedSocket::WantWrite() +BufferedSocketError BufferedSocket::BeginConnect(const irc::sockets::sockaddrs& dest, const irc::sockets::sockaddrs& bind, unsigned int timeout) { - this->Instance->SE->WantWrite(this); - this->WaitingForWriteEvent = true; -} + if (!HasFd()) + fd = socket(dest.family(), SOCK_STREAM, 0); -void BufferedSocket::SetQueues(int nfd) -{ - // attempt to increase socket sendq and recvq as high as its possible - int sendbuf = 32768; - int recvbuf = 32768; - if(setsockopt(nfd,SOL_SOCKET,SO_SNDBUF,(const char *)&sendbuf,sizeof(sendbuf)) || setsockopt(nfd,SOL_SOCKET,SO_RCVBUF,(const char *)&recvbuf,sizeof(sendbuf))) + if (!HasFd()) + return I_ERR_SOCKET; + + if (bind.family() != 0) { - //this->Instance->Log(DEFAULT, "Could not increase SO_SNDBUF/SO_RCVBUF for socket %u", GetFd()); - ; // do nothing. I'm a little sick of people trying to interpret this message as a result of why their incorrect setups don't work. + if (SocketEngine::Bind(fd, bind) < 0) + return I_ERR_BIND; } -} -/* Most irc servers require you to specify the ip you want to bind to. - * If you dont specify an IP, they rather dumbly bind to the first IP - * of the box (e.g. INADDR_ANY). In InspIRCd, we scan thought the IP - * addresses we've bound server ports to, and we try and bind our outbound - * connections to the first usable non-loopback and non-any IP we find. - * This is easier to configure when you have a lot of links and a lot - * of servers to configure. - */ -bool BufferedSocket::BindAddr(const std::string &ip) -{ - ConfigReader Conf(this->Instance); - socklen_t size = sizeof(sockaddr_in); -#ifdef IPV6 - bool v6 = false; - /* Are we looking for a binding to fit an ipv6 host? */ - if ((ip.empty()) || (ip.find(':') != std::string::npos)) - v6 = true; -#endif - int j = 0; - while (j < Conf.Enumerate("bind") || (!ip.empty())) + SocketEngine::NonBlocking(fd); + + if (SocketEngine::Connect(this, dest) == -1) { - std::string sIP = ip.empty() ? Conf.ReadValue("bind","address",j) : ip; - if (!ip.empty() || Conf.ReadValue("bind","type",j) == "servers") - { - if (!ip.empty() || ((sIP != "*") && (sIP != "127.0.0.1") && (!sIP.empty()) && (sIP != "::1"))) - { - /* The [2] is required because we may write a sockaddr_in6 here, and sockaddr_in6 is larger than sockaddr, where sockaddr_in4 is not. */ - sockaddr* s = new sockaddr[2]; -#ifdef IPV6 - if (v6) - { - in6_addr n; - if (inet_pton(AF_INET6, sIP.c_str(), &n) > 0) - { - memcpy(&((sockaddr_in6*)s)->sin6_addr, &n, sizeof(sockaddr_in6)); - ((sockaddr_in6*)s)->sin6_port = 0; - ((sockaddr_in6*)s)->sin6_family = AF_INET6; - size = sizeof(sockaddr_in6); - } - else - { - delete[] s; - j++; - continue; - } - } - else -#endif - { - in_addr n; - if (inet_aton(sIP.c_str(), &n) > 0) - { - ((sockaddr_in*)s)->sin_addr = n; - ((sockaddr_in*)s)->sin_port = 0; - ((sockaddr_in*)s)->sin_family = AF_INET; - } - else - { - delete[] s; - j++; - continue; - } - } + if (errno != EINPROGRESS) + return I_ERR_CONNECT; + } - if (Instance->SE->Bind(this->fd, s, size) < 0) - { - this->state = I_ERROR; - this->OnError(I_ERR_BIND); - this->fd = -1; - delete[] s; - return false; - } + this->state = I_CONNECTING; - delete[] s; - return true; - } - } - j++; - } - Instance->Logs->Log("SOCKET", DEBUG,"nothing in the config to bind()!"); - return true; + if (!SocketEngine::AddFd(this, FD_WANT_NO_READ | FD_WANT_SINGLE_WRITE | FD_WRITE_WILL_BLOCK)) + return I_ERR_NOMOREFDS; + + this->Timeout = new SocketTimeout(this->GetFd(), this, timeout); + ServerInstance->Timers.AddTimer(this->Timeout); + + ServerInstance->Logs->Log("SOCKET", LOG_DEBUG, "BufferedSocket::DoConnect success"); + return I_ERR_NONE; } -bool BufferedSocket::DoConnect() +void StreamSocket::Close() { - /* The [2] is required because we may write a sockaddr_in6 here, and sockaddr_in6 is larger than sockaddr, where sockaddr_in4 is not. */ - sockaddr* addr = new sockaddr[2]; - socklen_t size = sizeof(sockaddr_in); -#ifdef IPV6 - bool v6 = false; - if ((!*this->host) || strchr(this->host, ':')) - v6 = true; - - if (v6) - { - this->fd = socket(AF_INET6, SOCK_STREAM, 0); - if ((this->fd > -1) && ((strstr(this->IP,"::ffff:") != (char*)&this->IP) && (strstr(this->IP,"::FFFF:") != (char*)&this->IP))) - { - if (!this->BindAddr(this->cbindip)) - { - delete[] addr; - return false; - } - } - } - else -#endif - { - this->fd = socket(AF_INET, SOCK_STREAM, 0); - if (this->fd > -1) - { - if (!this->BindAddr(this->cbindip)) - { - delete[] addr; - return false; - } - } - } + if (closing) + return; - if (this->fd == -1) + closing = true; + if (HasFd()) { - this->state = I_ERROR; - this->OnError(I_ERR_SOCKET); - delete[] addr; - return false; - } + // final chance, dump as much of the sendq as we can + DoWrite(); -#ifdef IPV6 - if (v6) - { - in6_addr addy; - if (inet_pton(AF_INET6, this->host, &addy) > 0) + IOHook* hook = GetIOHook(); + DelIOHook(); + while (hook) { - ((sockaddr_in6*)addr)->sin6_family = AF_INET6; - memcpy(&((sockaddr_in6*)addr)->sin6_addr, &addy, sizeof(addy)); - ((sockaddr_in6*)addr)->sin6_port = htons(this->port); - size = sizeof(sockaddr_in6); + hook->OnStreamSocketClose(this); + IOHook* const nexthook = GetNextHook(hook); + delete hook; + hook = nexthook; } + SocketEngine::Shutdown(this, 2); + SocketEngine::Close(this); } +} + +void StreamSocket::Close(bool writeblock) +{ + if (getSendQSize() != 0 && writeblock) + closeonempty = true; else -#endif - { - in_addr addy; - if (inet_aton(this->host, &addy) > 0) - { - ((sockaddr_in*)addr)->sin_family = AF_INET; - ((sockaddr_in*)addr)->sin_addr = addy; - ((sockaddr_in*)addr)->sin_port = htons(this->port); - } - } + Close(); +} - Instance->SE->NonBlocking(this->fd); +CullResult StreamSocket::cull() +{ + Close(); + return EventHandler::cull(); +} -#ifdef WIN32 - /* UGH for the LOVE OF ZOMBIE JESUS SOMEONE FIX THIS!!!!!!!!!!! */ - Instance->SE->Blocking(this->fd); -#endif +bool StreamSocket::GetNextLine(std::string& line, char delim) +{ + std::string::size_type i = recvq.find(delim); + if (i == std::string::npos) + return false; + line.assign(recvq, 0, i); + recvq.erase(0, i + 1); + return true; +} - if (Instance->SE->Connect(this, (sockaddr*)addr, size) == -1) - { - if (errno != EINPROGRESS) - { - this->OnError(I_ERR_CONNECT); - this->Close(); - this->state = I_ERROR; - return false; - } +int StreamSocket::HookChainRead(IOHook* hook, std::string& rq) +{ + if (!hook) + return ReadToRecvQ(rq); - this->Timeout = new SocketTimeout(this->GetFd(), this->Instance, this, timeout_val, this->Instance->Time()); - this->Instance->Timers->AddTimer(this->Timeout); - } -#ifdef WIN32 - /* CRAQ SMOKING STUFF TO BE FIXED */ - Instance->SE->NonBlocking(this->fd); -#endif - this->state = I_CONNECTING; - if (this->fd > -1) + IOHookMiddle* const iohm = IOHookMiddle::ToMiddleHook(hook); + if (iohm) { - if (!this->Instance->SE->AddFd(this)) - { - this->OnError(I_ERR_NOMOREFDS); - this->Close(); - this->state = I_ERROR; - return false; - } - this->SetQueues(this->fd); + // Call the next hook to put data into the recvq of the current hook + const int ret = HookChainRead(iohm->GetNextHook(), iohm->GetRecvQ()); + if (ret <= 0) + return ret; } - - Instance->Logs->Log("SOCKET", DEBUG,"BufferedSocket::DoConnect success"); - return true; + return hook->OnStreamSocketRead(this, rq); } - -void BufferedSocket::Close() +void StreamSocket::DoRead() { - /* Save this, so we dont lose it, - * otherise on failure, error messages - * might be inaccurate. - */ - int save = errno; - if (this->fd > -1) - { - if (this->IsIOHooked && Instance->Config->GetIOHook(this)) - { - try - { - if (this->state != I_LISTENING) - Instance->Config->GetIOHook(this)->OnRawSocketClose(this->fd); - } - catch (CoreException& modexcept) - { - Instance->Logs->Log("SOCKET", DEFAULT,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason()); - } - } - Instance->SE->Shutdown(this, 2); - if (Instance->SE->Close(this) != -1) - this->OnClose(); + const std::string::size_type prevrecvqsize = recvq.size(); - if (Instance->SocketCull.find(this) == Instance->SocketCull.end()) - Instance->SocketCull[this] = this; + const int result = HookChainRead(GetIOHook(), recvq); + if (result < 0) + { + SetError("Read Error"); // will not overwrite a better error message + return; } - errno = save; -} -std::string BufferedSocket::GetIP() -{ - return this->IP; + if (recvq.size() > prevrecvqsize) + OnDataReady(); } -const char* BufferedSocket::Read() +int StreamSocket::ReadToRecvQ(std::string& rq) { - if (!Instance->SE->BoundsCheckFd(this)) - return NULL; - - int n = 0; - char* ReadBuffer = Instance->GetReadBuffer(); - - if (this->IsIOHooked) - { - int result2 = 0; - int MOD_RESULT = 0; - try + char* ReadBuffer = ServerInstance->GetReadBuffer(); + int n = SocketEngine::Recv(this, ReadBuffer, ServerInstance->Config->NetBufferSize, 0); + if (n == ServerInstance->Config->NetBufferSize) + { + SocketEngine::ChangeEventMask(this, FD_WANT_FAST_READ | FD_ADD_TRIAL_READ); + rq.append(ReadBuffer, n); + } + else if (n > 0) { - MOD_RESULT = Instance->Config->GetIOHook(this)->OnRawSocketRead(this->fd, ReadBuffer, Instance->Config->NetBufferSize, result2); + SocketEngine::ChangeEventMask(this, FD_WANT_FAST_READ); + rq.append(ReadBuffer, n); } - catch (CoreException& modexcept) + else if (n == 0) { - Instance->Logs->Log("SOCKET", DEFAULT,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason()); + error = "Connection closed"; + SocketEngine::ChangeEventMask(this, FD_WANT_NO_READ | FD_WANT_NO_WRITE); + return -1; } - if (MOD_RESULT < 0) + else if (SocketEngine::IgnoreError()) { - n = -1; - errno = EAGAIN; + SocketEngine::ChangeEventMask(this, FD_WANT_FAST_READ | FD_READ_WILL_BLOCK); + return 0; + } + else if (errno == EINTR) + { + SocketEngine::ChangeEventMask(this, FD_WANT_FAST_READ | FD_ADD_TRIAL_READ); + return 0; } else { - n = result2; + error = SocketEngine::LastError(); + SocketEngine::ChangeEventMask(this, FD_WANT_NO_READ | FD_WANT_NO_WRITE); + return -1; } - } - else + return n; +} + +/* Don't try to prepare huge blobs of data to send to a blocked socket */ +static const int MYIOV_MAX = IOV_MAX < 128 ? IOV_MAX : 128; + +void StreamSocket::DoWrite() +{ + if (getSendQSize() == 0) { - n = recv(this->fd, ReadBuffer, Instance->Config->NetBufferSize, 0); - } + if (closeonempty) + Close(); - /* - * This used to do some silly bounds checking instead of just passing bufsize - 1 to recv. - * Not only does that make absolutely no sense, but it could potentially result in a read buffer's worth - * of data being thrown into the bit bucket for no good reason, which is just *stupid*.. do things correctly now. - * --w00t (july 2, 2008) - */ - if (n > 0) + return; + } + if (!error.empty() || !HasFd()) { - ReadBuffer[n] = 0; - return ReadBuffer; + ServerInstance->Logs->Log("SOCKET", LOG_DEBUG, "DoWrite on errored or closed socket"); + return; } - else + + SendQueue* psendq = &sendq; + IOHook* hook = GetIOHook(); + while (hook) { - int err = errno; - if (err == EAGAIN) - return ""; - else - return NULL; + int rv = hook->OnStreamSocketWrite(this, *psendq); + psendq = NULL; + + // rv == 0 means the socket has blocked. Stop trying to send data. + // IOHook has requested unblock notification from the socketengine. + if (rv == 0) + break; + + if (rv < 0) + { + SetError("Write Error"); // will not overwrite a better error message + break; + } + + IOHookMiddle* const iohm = IOHookMiddle::ToMiddleHook(hook); + hook = NULL; + if (iohm) + { + psendq = &iohm->GetSendQ(); + hook = iohm->GetNextHook(); + } } -} -/* - * This function formerly tried to flush write buffer each call. - * While admirable in attempting to get the data out to wherever - * it is going, on a full socket, it's just going to syscall write() and - * EAGAIN constantly, instead of waiting in the SE to know if it can write - * which will chew a bit of CPU. - * - * So, now this function returns void (take note) and just adds to the sendq. - * - * It'll get written at a determinate point when the socketengine tells us it can write. - * -- w00t (april 1, 2008) - */ -void BufferedSocket::Write(const std::string &data) -{ - /* Append the data to the back of the queue ready for writing */ - outbuffer.push_back(data); + if (psendq) + FlushSendQ(*psendq); - /* Mark ourselves as wanting write */ - this->Instance->SE->WantWrite(this); + if (getSendQSize() == 0 && closeonempty) + Close(); } -bool BufferedSocket::FlushWriteBuffer() +void StreamSocket::FlushSendQ(SendQueue& sq) { - errno = 0; - if ((this->fd > -1) && (this->state == I_CONNECTED)) - { - if (this->IsIOHooked) + // don't even try if we are known to be blocking + if (GetEventMask() & FD_WRITE_WILL_BLOCK) + return; + // start out optimistic - we won't need to write any more + int eventChange = FD_WANT_EDGE_WRITE; + while (error.empty() && !sq.empty() && eventChange == FD_WANT_EDGE_WRITE) { - while (outbuffer.size() && (errno != EAGAIN)) + // Prepare a writev() call to write all buffers efficiently + int bufcount = sq.size(); + + // cap the number of buffers at MYIOV_MAX + if (bufcount > MYIOV_MAX) { - try - { - /* XXX: The lack of buffering here is NOT a bug, modules implementing this interface have to - * implement their own buffering mechanisms - */ - Instance->Config->GetIOHook(this)->OnRawSocketWrite(this->fd, outbuffer[0].c_str(), outbuffer[0].length()); - outbuffer.pop_front(); - } - catch (CoreException& modexcept) + bufcount = MYIOV_MAX; + } + + int rv_max = 0; + int rv; + { + SocketEngine::IOVector iovecs[MYIOV_MAX]; + size_t j = 0; + for (SendQueue::const_iterator i = sq.begin(), end = i+bufcount; i != end; ++i, j++) { - Instance->Logs->Log("SOCKET", DEBUG,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason()); - return true; + const SendQueue::Element& elem = *i; + iovecs[j].iov_base = const_cast(elem.data()); + iovecs[j].iov_len = elem.length(); + rv_max += iovecs[j].iov_len; } + rv = SocketEngine::WriteV(this, iovecs, bufcount); } - } - else - { - /* If we have multiple lines, try to send them all, - * not just the first one -- Brain - */ - while (outbuffer.size() && (errno != EAGAIN)) - { - /* Send a line */ - int result = Instance->SE->Send(this, outbuffer[0].c_str(), outbuffer[0].length(), 0); - if (result > 0) + if (rv == (int)sq.bytes()) + { + // it's our lucky day, everything got written out. Fast cleanup. + // This won't ever happen if the number of buffers got capped. + sq.clear(); + } + else if (rv > 0) + { + // Partial write. Clean out strings from the sendq + if (rv < rv_max) + { + // it's going to block now + eventChange = FD_WANT_FAST_WRITE | FD_WRITE_WILL_BLOCK; + } + while (rv > 0 && !sq.empty()) { - if ((unsigned int)result >= outbuffer[0].length()) + const SendQueue::Element& front = sq.front(); + if (front.length() <= (size_t)rv) { - /* The whole block was written (usually a line) - * Pop the block off the front of the queue, - * dont set errno, because we are clear of errors - * and want to try and write the next block too. - */ - outbuffer.pop_front(); + // this string got fully written out + rv -= front.length(); + sq.pop_front(); } else { - std::string temp = outbuffer[0].substr(result); - outbuffer[0] = temp; - /* We didnt get the whole line out. arses. - * Try again next time, i guess. Set errno, - * because we shouldnt be writing any more now, - * until the socketengine says its safe to do so. - */ - errno = EAGAIN; + // stopped in the middle of this string + sq.erase_front(rv); + rv = 0; } } - else if (result == 0) - { - this->Instance->SE->DelFd(this); - this->Close(); - return true; - } - else if ((result == -1) && (errno != EAGAIN)) - { - this->OnError(I_ERR_WRITE); - this->state = I_ERROR; - this->Instance->SE->DelFd(this); - this->Close(); - return true; - } + } + else if (rv == 0) + { + error = "Connection closed"; + } + else if (SocketEngine::IgnoreError()) + { + eventChange = FD_WANT_FAST_WRITE | FD_WRITE_WILL_BLOCK; + } + else if (errno == EINTR) + { + // restart interrupted syscall + errno = 0; + } + else + { + error = SocketEngine::LastError(); } } - } + if (!error.empty()) + { + // error - kill all events + SocketEngine::ChangeEventMask(this, FD_WANT_NO_READ | FD_WANT_NO_WRITE); + } + else + { + SocketEngine::ChangeEventMask(this, eventChange); + } +} + +bool StreamSocket::OnSetEndPoint(const irc::sockets::sockaddrs& local, const irc::sockets::sockaddrs& remote) +{ + return false; +} - if ((errno == EAGAIN) && (fd > -1)) +void StreamSocket::WriteData(const std::string &data) +{ + if (!HasFd()) { - this->Instance->SE->WantWrite(this); + ServerInstance->Logs->Log("SOCKET", LOG_DEBUG, "Attempt to write data to dead socket: %s", + data.c_str()); + return; } - return (fd < 0); + /* Append the data to the back of the queue ready for writing */ + sendq.push_back(data); + + SocketEngine::ChangeEventMask(this, FD_ADD_TRIAL_WRITE); } -void SocketTimeout::Tick(time_t) +bool SocketTimeout::Tick(time_t) { - ServerInstance->Logs->Log("SOCKET", DEBUG,"SocketTimeout::Tick"); + ServerInstance->Logs->Log("SOCKET", LOG_DEBUG, "SocketTimeout::Tick"); - if (ServerInstance->SE->GetRef(this->sfd) != this->sock) - return; + if (SocketEngine::GetRef(this->sfd) != this->sock) + { + delete this; + return false; + } if (this->sock->state == I_CONNECTING) { - // for non-listening sockets, the timeout can occur + // for connecting sockets, the timeout can occur // which causes termination of the connection after // the given number of seconds without a successful // connection. this->sock->OnTimeout(); this->sock->OnError(I_ERR_TIMEOUT); - this->sock->timeout = true; - - /* NOTE: We must set this AFTER DelFd, as we added - * this socket whilst writeable. This means that we - * must DELETE the socket whilst writeable too! - */ this->sock->state = I_ERROR; - if (ServerInstance->SocketCull.find(this->sock) == ServerInstance->SocketCull.end()) - ServerInstance->SocketCull[this->sock] = this->sock; + ServerInstance->GlobalCulls.AddItem(sock); } this->sock->Timeout = NULL; + delete this; + return false; } -bool BufferedSocket::Poll() +void BufferedSocket::OnConnected() { } +void BufferedSocket::OnTimeout() { return; } + +void BufferedSocket::OnEventHandlerWrite() { - int incoming = -1; + if (state == I_CONNECTING) + { + state = I_CONNECTED; + this->OnConnected(); + if (!GetIOHook()) + SocketEngine::ChangeEventMask(this, FD_WANT_FAST_READ | FD_WANT_EDGE_WRITE); + } + this->StreamSocket::OnEventHandlerWrite(); +} -#ifndef WINDOWS - if (!Instance->SE->BoundsCheckFd(this)) - return false; -#endif +BufferedSocket::~BufferedSocket() +{ + this->Close(); + // The timer is removed from the TimerManager in Timer::~Timer() + delete Timeout; +} - if (Instance->SE->GetRef(this->fd) != this) - return false; +void StreamSocket::OnEventHandlerError(int errornum) +{ + if (!error.empty()) + return; - switch (this->state) - { - case I_CONNECTING: - /* Our socket was in write-state, so delete it and re-add it - * in read-state. - */ -#ifndef WINDOWS - if (this->fd > -1) - { - this->Instance->SE->DelFd(this); - if (!this->Instance->SE->AddFd(this)) - return false; - } -#endif - this->SetState(I_CONNECTED); + if (errornum == 0) + SetError("Connection closed"); + else + SetError(SocketEngine::GetError(errornum)); - if (Instance->Config->GetIOHook(this)) - { - Instance->Logs->Log("SOCKET",DEBUG,"Hook for raw connect"); - try - { - Instance->Config->GetIOHook(this)->OnRawSocketConnect(this->fd); - } - catch (CoreException& modexcept) - { - Instance->Logs->Log("SOCKET",DEBUG,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason()); - } - } - return this->OnConnected(); - break; - case I_LISTENING: - { - /* The [2] is required because we may write a sockaddr_in6 here, and sockaddr_in6 is larger than sockaddr, where sockaddr_in4 is not. */ - sockaddr* client = new sockaddr[2]; - length = sizeof (sockaddr_in); - std::string recvip; -#ifdef IPV6 - if ((!*this->host) || strchr(this->host, ':')) - length = sizeof(sockaddr_in6); -#endif - incoming = Instance->SE->Accept(this, client, &length); -#ifdef IPV6 - if ((!*this->host) || strchr(this->host, ':')) - { - char buf[1024]; - recvip = inet_ntop(AF_INET6, &((sockaddr_in6*)client)->sin6_addr, buf, sizeof(buf)); - } - else -#endif - { - // FIX: we were doing this for IPv6 connections as well, which was fucking recvip.. - // Add brackets to make this a bit clearer. -- w00t (Jan 15, 2008) - recvip = inet_ntoa(((sockaddr_in*)client)->sin_addr); - } + BufferedSocketError errcode = I_ERR_OTHER; + switch (errornum) + { + case ETIMEDOUT: + errcode = I_ERR_TIMEOUT; + break; + case ECONNREFUSED: + case 0: + errcode = I_ERR_CONNECT; + break; + case EADDRINUSE: + errcode = I_ERR_BIND; + break; + case EPIPE: + case EIO: + errcode = I_ERR_WRITE; + break; + } - Instance->SE->NonBlocking(incoming); + // Log and call OnError() + CheckError(errcode); +} - this->OnIncomingConnection(incoming, (char*)recvip.c_str()); +void StreamSocket::OnEventHandlerRead() +{ + if (!error.empty()) + return; - if (this->IsIOHooked) - { - try - { - Instance->Config->GetIOHook(this)->OnRawSocketAccept(incoming, recvip.c_str(), this->port); - } - catch (CoreException& modexcept) - { - Instance->Logs->Log("SOCKET",DEBUG,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason()); - } - } + try + { + DoRead(); + } + catch (CoreException& ex) + { + ServerInstance->Logs->Log("SOCKET", LOG_DEFAULT, "Caught exception in socket processing on FD %d - '%s'", fd, ex.GetReason().c_str()); + SetError(ex.GetReason()); + } + CheckError(I_ERR_OTHER); +} - this->SetQueues(incoming); +void StreamSocket::OnEventHandlerWrite() +{ + if (!error.empty()) + return; - delete[] client; - return true; - } - break; - case I_CONNECTED: - /* Process the read event */ - return this->OnDataReady(); - break; - default: - break; - } - return true; + DoWrite(); + CheckError(I_ERR_OTHER); } -void BufferedSocket::SetState(BufferedSocketState s) +void StreamSocket::CheckError(BufferedSocketError errcode) { - this->state = s; + if (!error.empty()) + { + ServerInstance->Logs->Log("SOCKET", LOG_DEBUG, "Error on FD %d - '%s'", fd, error.c_str()); + OnError(errcode); + } } -BufferedSocketState BufferedSocket::GetState() +IOHook* StreamSocket::GetModHook(Module* mod) const { - return this->state; + for (IOHook* curr = GetIOHook(); curr; curr = GetNextHook(curr)) + { + if (curr->prov->creator == mod) + return curr; + } + return NULL; } -int BufferedSocket::GetFd() +IOHook* StreamSocket::GetLastHook() const { - return this->fd; + IOHook* curr = GetIOHook(); + IOHook* last = curr; + + for (; curr; curr = GetNextHook(curr)) + last = curr; + + return last; } -bool BufferedSocket::OnConnected() { return true; } -void BufferedSocket::OnError(BufferedSocketError) { return; } -int BufferedSocket::OnDisconnect() { return 0; } -int BufferedSocket::OnIncomingConnection(int, char*) { return 0; } -bool BufferedSocket::OnDataReady() { return true; } -bool BufferedSocket::OnWriteReady() { return true; } -void BufferedSocket::OnTimeout() { return; } -void BufferedSocket::OnClose() { return; } -BufferedSocket::~BufferedSocket() +void StreamSocket::AddIOHook(IOHook* newhook) { - this->Close(); - if (Timeout) + IOHook* curr = GetIOHook(); + if (!curr) { - Instance->Timers->DelTimer(Timeout); - Timeout = NULL; + iohook = newhook; + return; + } + + IOHookMiddle* lasthook; + while (curr) + { + lasthook = IOHookMiddle::ToMiddleHook(curr); + if (!lasthook) + return; + curr = lasthook->GetNextHook(); } + + lasthook->SetNextHook(newhook); } -void BufferedSocket::HandleEvent(EventType et, int errornum) +size_t StreamSocket::getSendQSize() const { - switch (et) + size_t ret = sendq.bytes(); + IOHook* curr = GetIOHook(); + while (curr) { - case EVENT_ERROR: - switch (errornum) - { - case ETIMEDOUT: - this->OnError(I_ERR_TIMEOUT); - break; - case ECONNREFUSED: - case 0: - this->OnError(this->state == I_CONNECTING ? I_ERR_CONNECT : I_ERR_WRITE); - break; - case EADDRINUSE: - this->OnError(I_ERR_BIND); - break; - case EPIPE: - case EIO: - this->OnError(I_ERR_WRITE); - break; - } - if (this->Instance->SocketCull.find(this) == this->Instance->SocketCull.end()) - this->Instance->SocketCull[this] = this; - return; - break; - case EVENT_READ: - if (!this->Poll()) - { - if (this->Instance->SocketCull.find(this) == this->Instance->SocketCull.end()) - this->Instance->SocketCull[this] = this; - return; - } - break; - case EVENT_WRITE: - if (this->WaitingForWriteEvent) - { - this->WaitingForWriteEvent = false; - if (!this->OnWriteReady()) - { - if (this->Instance->SocketCull.find(this) == this->Instance->SocketCull.end()) - this->Instance->SocketCull[this] = this; - return; - } - } - if (this->state == I_CONNECTING) - { - /* This might look wrong as if we should be actually calling - * with EVENT_WRITE, but trust me it is correct. There are some - * writeability-state things in the read code, because of how - * BufferedSocket used to work regarding write buffering in previous - * versions of InspIRCd. - Brain - */ - this->HandleEvent(EVENT_READ); - return; - } - else - { - if (this->FlushWriteBuffer()) - { - if (this->Instance->SocketCull.find(this) == this->Instance->SocketCull.end()) - this->Instance->SocketCull[this] = this; - return; - } - } - break; + const IOHookMiddle* const iohm = IOHookMiddle::ToMiddleHook(curr); + if (!iohm) + break; + + ret += iohm->GetSendQ().bytes(); + curr = iohm->GetNextHook(); } + return ret; } +void StreamSocket::SwapInternals(StreamSocket& other) +{ + if (type != other.type) + return; + + EventHandler::SwapInternals(other); + std::swap(closeonempty, other.closeonempty); + std::swap(closing, other.closing); + std::swap(error, other.error); + std::swap(iohook, other.iohook); + std::swap(recvq, other.recvq); + std::swap(sendq, other.sendq); +}