-/* +------------------------------------+\r * | Inspire Internet Relay Chat Daemon |\r * +------------------------------------+\r *\r * InspIRCd: (C) 2002-2007 InspIRCd Development Team\r * See: http://www.inspircd.org/wiki/index.php/Credits\r *\r * This program is free but copyrighted software; see\r * the file COPYING for details.\r *\r * ---------------------------------------------------\r */\r\r#include "socket.h"\r#include "configreader.h"\r#include "inspstring.h"\r#include "socketengine.h"\r#include "inspircd.h"\r\rusing irc::sockets::OpenTCPSocket;\r\rbool InspSocket::Readable()\r{\r return ((this->state != I_CONNECTING) && (this->WaitingForWriteEvent == false));\r}\r\rInspSocket::InspSocket(InspIRCd* SI)\r{\r this->Timeout = NULL;\r this->state = I_DISCONNECTED;\r this->fd = -1;\r this->WaitingForWriteEvent = false;\r this->Instance = SI;\r this->IsIOHooked = false;\r}\r\rInspSocket::InspSocket(InspIRCd* SI, int newfd, const char* ip)\r{\r this->Timeout = NULL;\r this->fd = newfd;\r this->state = I_CONNECTED;\r strlcpy(this->IP,ip,MAXBUF);\r this->WaitingForWriteEvent = false;\r this->Instance = SI;\r this->IsIOHooked = false;\r if (this->fd > -1)\r this->Instance->SE->AddFd(this);\r}\r\rInspSocket::InspSocket(InspIRCd* SI, const std::string &ipaddr, int aport, bool listening, unsigned long maxtime, const std::string &connectbindip)\r{\r this->cbindip = connectbindip;\r this->fd = -1;\r this->Instance = SI;\r strlcpy(host,ipaddr.c_str(),MAXBUF);\r this->WaitingForWriteEvent = false;\r this->IsIOHooked = false;\r this->Timeout = NULL;\r if (listening)\r {\r if ((this->fd = OpenTCPSocket(host)) == ERROR)\r {\r this->fd = -1;\r this->state = I_ERROR;\r this->OnError(I_ERR_SOCKET);\r return;\r }\r else\r {\r if (!SI->BindSocket(this->fd,aport,(char*)ipaddr.c_str()))\r {\r this->Close();\r this->fd = -1;\r this->state = I_ERROR;\r this->OnError(I_ERR_BIND);\r this->ClosePending = true;\r return;\r }\r else\r {\r this->state = I_LISTENING;\r this->port = aport;\r if (this->fd > -1)\r {\r if (!this->Instance->SE->AddFd(this))\r {\r this->Close();\r this->state = I_ERROR;\r this->OnError(I_ERR_NOMOREFDS);\r }\r }\r return;\r }\r }\r }\r else\r {\r strlcpy(this->host,ipaddr.c_str(),MAXBUF);\r this->port = aport;\r\r bool ipvalid = true;\r#ifdef IPV6\r if (strchr(host,':'))\r {\r in6_addr n;\r if (inet_pton(AF_INET6, host, &n) < 1)\r ipvalid = false;\r }\r else\r#endif\r {\r in_addr n;\r if (inet_aton(host,&n) < 1)\r ipvalid = false;\r }\r if (!ipvalid)\r {\r this->Instance->Log(DEBUG,"BUG: Hostname passed to InspSocket, rather than an IP address!");\r this->OnError(I_ERR_CONNECT);\r this->Close();\r this->fd = -1;\r this->state = I_ERROR;\r return;\r }\r else\r {\r strlcpy(this->IP,host,MAXBUF);\r timeout_val = maxtime;\r if (!this->DoConnect())\r {\r this->OnError(I_ERR_CONNECT);\r this->Close();\r this->fd = -1;\r this->state = I_ERROR;\r return;\r }\r }\r }\r}\r\rvoid InspSocket::WantWrite()\r{\r this->Instance->SE->WantWrite(this);\r this->WaitingForWriteEvent = true;\r}\r\rvoid InspSocket::SetQueues(int nfd)\r{\r // attempt to increase socket sendq and recvq as high as its possible\r int sendbuf = 32768;\r int recvbuf = 32768;\r setsockopt(nfd,SOL_SOCKET,SO_SNDBUF,(const char *)&sendbuf,sizeof(sendbuf));\r setsockopt(nfd,SOL_SOCKET,SO_RCVBUF,(const char *)&recvbuf,sizeof(sendbuf));\r}\r\r/* Most irc servers require you to specify the ip you want to bind to.\r * If you dont specify an IP, they rather dumbly bind to the first IP\r * of the box (e.g. INADDR_ANY). In InspIRCd, we scan thought the IP\r * addresses we've bound server ports to, and we try and bind our outbound\r * connections to the first usable non-loopback and non-any IP we find.\r * This is easier to configure when you have a lot of links and a lot\r * of servers to configure.\r */\rbool InspSocket::BindAddr(const std::string &ip)\r{\r ConfigReader Conf(this->Instance);\r socklen_t size = sizeof(sockaddr_in);\r#ifdef IPV6\r bool v6 = false;\r /* Are we looking for a binding to fit an ipv6 host? */\r if ((ip.empty()) || (ip.find(':') != std::string::npos))\r v6 = true;\r#endif\r int j = 0;\r while (j < Conf.Enumerate("bind") || (!ip.empty()))\r {\r std::string IP = ip.empty() ? Conf.ReadValue("bind","address",j) : ip;\r if (!ip.empty() || Conf.ReadValue("bind","type",j) == "servers")\r {\r if (!ip.empty() || ((IP != "*") && (IP != "127.0.0.1") && (!IP.empty()) && (IP != "::1")))\r {\r sockaddr* s = new sockaddr[2];\r#ifdef IPV6\r if (v6)\r {\r in6_addr n;\r if (inet_pton(AF_INET6, IP.c_str(), &n) > 0)\r {\r memcpy(&((sockaddr_in6*)s)->sin6_addr, &n, sizeof(n));\r ((sockaddr_in6*)s)->sin6_port = 0;\r ((sockaddr_in6*)s)->sin6_family = AF_INET6;\r size = sizeof(sockaddr_in6);\r }\r else\r {\r delete[] s;\r j++;\r continue;\r }\r }\r else\r#endif\r {\r in_addr n;\r if (inet_aton(IP.c_str(), &n) > 0)\r {\r ((sockaddr_in*)s)->sin_addr = n;\r ((sockaddr_in*)s)->sin_port = 0;\r ((sockaddr_in*)s)->sin_family = AF_INET;\r }\r else\r {\r delete[] s;\r j++;\r continue;\r }\r }\r\r if (bind(this->fd, s, size) < 0)\r {\r this->state = I_ERROR;\r this->OnError(I_ERR_BIND);\r this->fd = -1;\r delete[] s;\r return false;\r }\r\r delete[] s;\r return true;\r }\r }\r j++;\r }\r return true;\r}\r\rbool InspSocket::DoConnect()\r{\r sockaddr* addr = new sockaddr[2];\r socklen_t size = sizeof(sockaddr_in);\r#ifdef IPV6\r bool v6 = false;\r if ((!*this->host) || strchr(this->host, ':'))\r v6 = true;\r\r if (v6)\r {\r this->fd = socket(AF_INET6, SOCK_STREAM, 0);\r if ((this->fd > -1) && ((strstr(this->IP,"::ffff:") != (char*)&this->IP) && (strstr(this->IP,"::FFFF:") != (char*)&this->IP)))\r {\r if (!this->BindAddr(this->cbindip))\r {\r delete[] addr;\r return false;\r }\r }\r }\r else\r#endif\r {\r this->fd = socket(AF_INET, SOCK_STREAM, 0);\r if (this->fd > -1)\r {\r if (!this->BindAddr(this->cbindip))\r {\r delete[] addr;\r return false;\r }\r }\r }\r\r if (this->fd == -1)\r {\r this->state = I_ERROR;\r this->OnError(I_ERR_SOCKET);\r delete[] addr;\r return false;\r }\r\r#ifdef IPV6\r if (v6)\r {\r in6_addr addy;\r if (inet_pton(AF_INET6, this->host, &addy) > 0)\r {\r ((sockaddr_in6*)addr)->sin6_family = AF_INET6;\r memcpy(&((sockaddr_in6*)addr)->sin6_addr, &addy, sizeof(addy));\r ((sockaddr_in6*)addr)->sin6_port = htons(this->port);\r size = sizeof(sockaddr_in6);\r }\r }\r else\r#endif\r {\r in_addr addy;\r if (inet_aton(this->host, &addy) > 0)\r {\r ((sockaddr_in*)addr)->sin_family = AF_INET;\r ((sockaddr_in*)addr)->sin_addr = addy;\r ((sockaddr_in*)addr)->sin_port = htons(this->port);\r }\r }\r#ifndef WIN32\r int flags = fcntl(this->fd, F_GETFL, 0);\r fcntl(this->fd, F_SETFL, flags | O_NONBLOCK);\r#else\r unsigned long flags = 0;\r ioctlsocket(this->fd, FIONBIO, &flags);\r#endif\r if (connect(this->fd, (sockaddr*)addr, size) == -1)\r {\r if (errno != EINPROGRESS)\r {\r this->OnError(I_ERR_CONNECT);\r this->Close();\r this->state = I_ERROR;\r return false;\r }\r\r this->Timeout = new SocketTimeout(this->GetFd(), this->Instance, this, timeout_val, this->Instance->Time());\r this->Instance->Timers->AddTimer(this->Timeout);\r }\r this->state = I_CONNECTING;\r if (this->fd > -1)\r {\r if (!this->Instance->SE->AddFd(this))\r {\r this->OnError(I_ERR_NOMOREFDS);\r this->Close();\r this->state = I_ERROR;\r return false;\r }\r this->SetQueues(this->fd);\r }\r return true;\r}\r\r\rvoid InspSocket::Close()\r{\r /* Save this, so we dont lose it,\r * otherise on failure, error messages\r * might be inaccurate.\r */\r int save = errno;\r if (this->fd > -1)\r {\r if (this->IsIOHooked && Instance->Config->GetIOHook(this))\r {\r try\r {\r Instance->Config->GetIOHook(this)->OnRawSocketClose(this->fd);\r }\r catch (CoreException& modexcept)\r {\r Instance->Log(DEFAULT,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());\r }\r }\r this->OnClose();\r shutdown(this->fd,2);\r close(this->fd);\r\r if (Instance->SocketCull.find(this) == Instance->SocketCull.end())\r Instance->SocketCull[this] = this;\r }\r errno = save;\r}\r\rstd::string InspSocket::GetIP()\r{\r return this->IP;\r}\r\rchar* InspSocket::Read()\r{\r#ifdef WINDOWS\r if ((fd < 0) || (m_internalFd > MAX_DESCRIPTORS))\r#else\r if ((fd < 0) || (fd > MAX_DESCRIPTORS))\r#endif\r return NULL;\r\r int n = 0;\r\r if (this->IsIOHooked)\r {\r int result2 = 0;\r int MOD_RESULT = 0;\r try\r {\r MOD_RESULT = Instance->Config->GetIOHook(this)->OnRawSocketRead(this->fd,this->ibuf,sizeof(this->ibuf),result2);\r }\r catch (CoreException& modexcept)\r {\r Instance->Log(DEFAULT,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());\r }\r if (MOD_RESULT < 0)\r {\r n = -1;\r errno = EAGAIN;\r }\r else\r {\r n = result2;\r }\r }\r else\r {\r n = recv(this->fd,this->ibuf,sizeof(this->ibuf),0);\r }\r\r if ((n > 0) && (n <= (int)sizeof(this->ibuf)))\r {\r ibuf[n] = 0;\r return ibuf;\r }\r else\r {\r int err = errno;\r if (err == EAGAIN)\r return "";\r else\r return NULL;\r }\r}\r\rvoid InspSocket::MarkAsClosed()\r{\r}\r\r// There are two possible outcomes to this function.\r// It will either write all of the data, or an undefined amount.\r// If an undefined amount is written the connection has failed\r// and should be aborted.\rint InspSocket::Write(const std::string &data)\r{\r /* Try and append the data to the back of the queue, and send it on its way\r */\r outbuffer.push_back(data);\r this->Instance->SE->WantWrite(this);\r return (!this->FlushWriteBuffer());\r}\r\rbool InspSocket::FlushWriteBuffer()\r{\r errno = 0;\r if ((this->fd > -1) && (this->state == I_CONNECTED))\r {\r if (this->IsIOHooked)\r {\r while (outbuffer.size() && (errno != EAGAIN))\r {\r try\r {\r /* XXX: The lack of buffering here is NOT a bug, modules implementing this interface have to\r * implement their own buffering mechanisms\r */\r Instance->Config->GetIOHook(this)->OnRawSocketWrite(this->fd, outbuffer[0].c_str(), outbuffer[0].length());\r outbuffer.pop_front();\r }\r catch (CoreException& modexcept)\r {\r Instance->Log(DEBUG,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());\r return true;\r }\r }\r }\r else\r {\r /* If we have multiple lines, try to send them all,\r * not just the first one -- Brain\r */\r while (outbuffer.size() && (errno != EAGAIN))\r {\r /* Send a line */\r#ifndef WIN32\r int result = write(this->fd,outbuffer[0].c_str(),outbuffer[0].length());\r#else\r int result = send(this->fd,outbuffer[0].c_str(),outbuffer[0].length(), 0);\r#endif\r if (result > 0)\r {\r if ((unsigned int)result >= outbuffer[0].length())\r {\r /* The whole block was written (usually a line)\r * Pop the block off the front of the queue,\r * dont set errno, because we are clear of errors\r * and want to try and write the next block too.\r */\r outbuffer.pop_front();\r }\r else\r {\r std::string temp = outbuffer[0].substr(result);\r outbuffer[0] = temp;\r /* We didnt get the whole line out. arses.\r * Try again next time, i guess. Set errno,\r * because we shouldnt be writing any more now,\r * until the socketengine says its safe to do so.\r */\r errno = EAGAIN;\r }\r }\r else if ((result == -1) && (errno != EAGAIN))\r {\r this->OnError(I_ERR_WRITE);\r this->state = I_ERROR;\r this->Instance->SE->DelFd(this);\r this->Close();\r return true;\r }\r }\r }\r }\r\r if ((errno == EAGAIN) && (fd > -1))\r {\r this->Instance->SE->WantWrite(this);\r }\r\r return (fd < 0);\r}\r\rvoid SocketTimeout::Tick(time_t now)\r{\r if (ServerInstance->SE->GetRef(this->sfd) != this->sock)\r return;\r\r if (this->sock->state == I_CONNECTING)\r {\r // for non-listening sockets, the timeout can occur\r // which causes termination of the connection after\r // the given number of seconds without a successful\r // connection.\r this->sock->OnTimeout();\r this->sock->OnError(I_ERR_TIMEOUT);\r this->sock->timeout = true;\r\r /* NOTE: We must set this AFTER DelFd, as we added\r * this socket whilst writeable. This means that we\r * must DELETE the socket whilst writeable too!\r */\r this->sock->state = I_ERROR;\r\r if (ServerInstance->SocketCull.find(this->sock) == ServerInstance->SocketCull.end())\r ServerInstance->SocketCull[this->sock] = this->sock;\r }\r\r this->sock->Timeout = NULL;\r}\r\rbool InspSocket::Poll()\r{\r#ifdef WINDOWS\r if(Instance->SE->GetRef(this->fd) != this)\r return false;\r int incoming = -1;\r#else\r if (this->Instance->SE->GetRef(this->fd) != this)\r return false;\r\r int incoming = -1;\r\r if ((fd < 0) || (fd > MAX_DESCRIPTORS))\r return false;\r#endif\r switch (this->state)\r {\r case I_CONNECTING:\r /* Our socket was in write-state, so delete it and re-add it\r * in read-state.\r */\r#ifndef WINDOWS\r if (this->fd > -1)\r {\r this->Instance->SE->DelFd(this);\r this->SetState(I_CONNECTED);\r if (!this->Instance->SE->AddFd(this))\r return false;\r }\r#else\r this->SetState(I_CONNECTED);\r#endif\r Instance->Log(DEBUG,"Inspsocket I_CONNECTING state");\r if (Instance->Config->GetIOHook(this))\r {\r Instance->Log(DEBUG,"Hook for raw connect");\r try\r {\r Instance->Config->GetIOHook(this)->OnRawSocketConnect(this->fd);\r }\r catch (CoreException& modexcept)\r {\r Instance->Log(DEBUG,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());\r }\r }\r return this->OnConnected();\r break;\r case I_LISTENING:\r {\r sockaddr* client = new sockaddr[2];\r length = sizeof (sockaddr_in);\r std::string recvip;\r#ifdef IPV6\r if ((!*this->host) || strchr(this->host, ':'))\r length = sizeof(sockaddr_in6);\r#endif\r incoming = _accept (this->fd, client, &length);\r#ifdef IPV6\r if ((!*this->host) || strchr(this->host, ':'))\r {\r char buf[1024];\r recvip = inet_ntop(AF_INET6, &((sockaddr_in6*)client)->sin6_addr, buf, sizeof(buf));\r }\r else\r#endif\r recvip = inet_ntoa(((sockaddr_in*)client)->sin_addr);\r this->OnIncomingConnection(incoming, (char*)recvip.c_str());\r\r if (this->IsIOHooked)\r {\r try\r {\r Instance->Config->GetIOHook(this)->OnRawSocketAccept(incoming, recvip.c_str(), this->port);\r }\r catch (CoreException& modexcept)\r {\r Instance->Log(DEBUG,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());\r }\r }\r\r this->SetQueues(incoming);\r\r delete[] client;\r return true;\r }\r break;\r case I_CONNECTED:\r /* Process the read event */\r return this->OnDataReady();\r break;\r default:\r break;\r }\r return true;\r}\r\rvoid InspSocket::SetState(InspSocketState s)\r{\r this->state = s;\r}\r\rInspSocketState InspSocket::GetState()\r{\r return this->state;\r}\r\rint InspSocket::GetFd()\r{\r return this->fd;\r}\r\rbool InspSocket::OnConnected() { return true; }\rvoid InspSocket::OnError(InspSocketError e) { return; }\rint InspSocket::OnDisconnect() { return 0; }\rint InspSocket::OnIncomingConnection(int newfd, char* ip) { return 0; }\rbool InspSocket::OnDataReady() { return true; }\rbool InspSocket::OnWriteReady() { return true; }\rvoid InspSocket::OnTimeout() { return; }\rvoid InspSocket::OnClose() { return; }\r\rInspSocket::~InspSocket()\r{\r this->Close();\r if (Timeout)\r {\r Instance->Timers->DelTimer(Timeout);\r Timeout = NULL;\r }\r}\r\rvoid InspSocket::HandleEvent(EventType et, int errornum)\r{\r switch (et)\r {\r case EVENT_ERROR:\r switch (errornum)\r {\r case ETIMEDOUT:\r this->OnError(I_ERR_TIMEOUT);\r break;\r case ECONNREFUSED:\r case 0:\r this->OnError(this->state == I_CONNECTING ? I_ERR_CONNECT : I_ERR_WRITE);\r break;\r case EADDRINUSE:\r this->OnError(I_ERR_BIND);\r break;\r case EPIPE:\r case EIO:\r this->OnError(I_ERR_WRITE);\r break;\r }\r if (this->Instance->SocketCull.find(this) == this->Instance->SocketCull.end())\r this->Instance->SocketCull[this] = this;\r return;\r break;\r case EVENT_READ:\r if (!this->Poll())\r {\r if (this->Instance->SocketCull.find(this) == this->Instance->SocketCull.end())\r this->Instance->SocketCull[this] = this;\r return;\r }\r break;\r case EVENT_WRITE:\r if (this->WaitingForWriteEvent)\r {\r this->WaitingForWriteEvent = false;\r if (!this->OnWriteReady())\r {\r if (this->Instance->SocketCull.find(this) == this->Instance->SocketCull.end())\r this->Instance->SocketCull[this] = this;\r return;\r }\r }\r if (this->state == I_CONNECTING)\r {\r /* This might look wrong as if we should be actually calling\r * with EVENT_WRITE, but trust me it is correct. There are some\r * writeability-state things in the read code, because of how\r * InspSocket used to work regarding write buffering in previous\r * versions of InspIRCd. - Brain\r */\r this->HandleEvent(EVENT_READ);\r return;\r }\r else\r {\r if (this->FlushWriteBuffer())\r {\r if (this->Instance->SocketCull.find(this) == this->Instance->SocketCull.end())\r this->Instance->SocketCull[this] = this;\r return;\r }\r }\r break;\r }\r}\r\r
\ No newline at end of file
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
+ *
+ * Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
+ * Copyright (C) 2007-2009 Robin Burchell <robin+git@viroteck.net>
+ * Copyright (C) 2008 Thomas Stagner <aquanight@inspircd.org>
+ * Copyright (C) 2006-2007 Craig Edwards <craigedwards@brainbox.cc>
+ * Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
+ * Copyright (C) 2006 Oliver Lupton <oliverlupton@gmail.com>
+ *
+ * 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 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 <http://www.gnu.org/licenses/>.
+ */
+
+
+#include "inspircd.h"
+#include "iohook.h"
+
+static IOHook* GetNextHook(IOHook* hook)
+{
+ IOHookMiddle* const iohm = IOHookMiddle::ToMiddleHook(hook);
+ if (iohm)
+ return iohm->GetNextHook();
+ return NULL;
+}
+
+BufferedSocket::BufferedSocket()
+{
+ Timeout = NULL;
+ state = I_ERROR;
+}
+
+BufferedSocket::BufferedSocket(int newfd)
+{
+ Timeout = NULL;
+ this->fd = newfd;
+ this->state = I_CONNECTED;
+ if (fd > -1)
+ SocketEngine::AddFd(this, FD_WANT_FAST_READ | FD_WANT_EDGE_WRITE);
+}
+
+void BufferedSocket::DoConnect(const std::string& ipaddr, int aport, unsigned int maxtime, const std::string& connectbindip)
+{
+ BufferedSocketError err = BeginConnect(ipaddr, aport, maxtime, connectbindip);
+ if (err != I_ERR_NONE)
+ {
+ state = I_ERROR;
+ SetError(SocketEngine::LastError());
+ OnError(err);
+ }
+}
+
+BufferedSocketError BufferedSocket::BeginConnect(const std::string& ipaddr, int aport, unsigned int maxtime, const std::string& connectbindip)
+{
+ irc::sockets::sockaddrs addr, bind;
+ if (!irc::sockets::aptosa(ipaddr, aport, addr))
+ {
+ ServerInstance->Logs->Log("SOCKET", LOG_DEBUG, "BUG: Hostname passed to BufferedSocket, rather than an IP address!");
+ return I_ERR_CONNECT;
+ }
+
+ bind.sa.sa_family = 0;
+ if (!connectbindip.empty())
+ {
+ if (!irc::sockets::aptosa(connectbindip, 0, bind))
+ {
+ return I_ERR_BIND;
+ }
+ }
+
+ return BeginConnect(addr, bind, maxtime);
+}
+
+BufferedSocketError BufferedSocket::BeginConnect(const irc::sockets::sockaddrs& dest, const irc::sockets::sockaddrs& bind, unsigned int timeout)
+{
+ if (fd < 0)
+ fd = socket(dest.sa.sa_family, SOCK_STREAM, 0);
+
+ if (fd < 0)
+ return I_ERR_SOCKET;
+
+ if (bind.sa.sa_family != 0)
+ {
+ if (SocketEngine::Bind(fd, bind) < 0)
+ return I_ERR_BIND;
+ }
+
+ SocketEngine::NonBlocking(fd);
+
+ if (SocketEngine::Connect(this, dest) == -1)
+ {
+ if (errno != EINPROGRESS)
+ return I_ERR_CONNECT;
+ }
+
+ this->state = I_CONNECTING;
+
+ 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;
+}
+
+void StreamSocket::Close()
+{
+ if (this->fd > -1)
+ {
+ // final chance, dump as much of the sendq as we can
+ DoWrite();
+
+ IOHook* hook = GetIOHook();
+ DelIOHook();
+ while (hook)
+ {
+ hook->OnStreamSocketClose(this);
+ IOHook* const nexthook = GetNextHook(hook);
+ delete hook;
+ hook = nexthook;
+ }
+ SocketEngine::Shutdown(this, 2);
+ SocketEngine::Close(this);
+ }
+}
+
+CullResult StreamSocket::cull()
+{
+ Close();
+ return EventHandler::cull();
+}
+
+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;
+}
+
+int StreamSocket::HookChainRead(IOHook* hook, std::string& rq)
+{
+ if (!hook)
+ return ReadToRecvQ(rq);
+
+ IOHookMiddle* const iohm = IOHookMiddle::ToMiddleHook(hook);
+ if (iohm)
+ {
+ // 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;
+ }
+ return hook->OnStreamSocketRead(this, rq);
+}
+
+void StreamSocket::DoRead()
+{
+ const std::string::size_type prevrecvqsize = recvq.size();
+
+ const int result = HookChainRead(GetIOHook(), recvq);
+ if (result < 0)
+ {
+ SetError("Read Error"); // will not overwrite a better error message
+ return;
+ }
+
+ if (recvq.size() > prevrecvqsize)
+ OnDataReady();
+}
+
+int StreamSocket::ReadToRecvQ(std::string& rq)
+{
+ 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)
+ {
+ SocketEngine::ChangeEventMask(this, FD_WANT_FAST_READ);
+ rq.append(ReadBuffer, n);
+ }
+ else if (n == 0)
+ {
+ error = "Connection closed";
+ SocketEngine::ChangeEventMask(this, FD_WANT_NO_READ | FD_WANT_NO_WRITE);
+ return -1;
+ }
+ else if (SocketEngine::IgnoreError())
+ {
+ 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
+ {
+ error = SocketEngine::LastError();
+ SocketEngine::ChangeEventMask(this, FD_WANT_NO_READ | FD_WANT_NO_WRITE);
+ return -1;
+ }
+ 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)
+ return;
+ if (!error.empty() || fd < 0)
+ {
+ ServerInstance->Logs->Log("SOCKET", LOG_DEBUG, "DoWrite on errored or closed socket");
+ return;
+ }
+
+ SendQueue* psendq = &sendq;
+ IOHook* hook = GetIOHook();
+ while (hook)
+ {
+ 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();
+ }
+ }
+
+ if (psendq)
+ FlushSendQ(*psendq);
+}
+
+void StreamSocket::FlushSendQ(SendQueue& sq)
+{
+ // 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)
+ {
+ // 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)
+ {
+ 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++)
+ {
+ const SendQueue::Element& elem = *i;
+ iovecs[j].iov_base = const_cast<char*>(elem.data());
+ iovecs[j].iov_len = elem.length();
+ rv_max += elem.length();
+ }
+ rv = SocketEngine::WriteV(this, iovecs, bufcount);
+ }
+
+ 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())
+ {
+ const SendQueue::Element& front = sq.front();
+ if (front.length() <= (size_t)rv)
+ {
+ // this string got fully written out
+ rv -= front.length();
+ sq.pop_front();
+ }
+ else
+ {
+ // stopped in the middle of this string
+ sq.erase_front(rv);
+ rv = 0;
+ }
+ }
+ }
+ 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);
+ }
+}
+
+void StreamSocket::WriteData(const std::string &data)
+{
+ if (fd < 0)
+ {
+ ServerInstance->Logs->Log("SOCKET", LOG_DEBUG, "Attempt to write data to dead socket: %s",
+ data.c_str());
+ return;
+ }
+
+ /* Append the data to the back of the queue ready for writing */
+ sendq.push_back(data);
+
+ SocketEngine::ChangeEventMask(this, FD_ADD_TRIAL_WRITE);
+}
+
+bool SocketTimeout::Tick(time_t)
+{
+ ServerInstance->Logs->Log("SOCKET", LOG_DEBUG, "SocketTimeout::Tick");
+
+ if (SocketEngine::GetRef(this->sfd) != this->sock)
+ {
+ delete this;
+ return false;
+ }
+
+ if (this->sock->state == I_CONNECTING)
+ {
+ // 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->state = I_ERROR;
+
+ ServerInstance->GlobalCulls.AddItem(sock);
+ }
+
+ this->sock->Timeout = NULL;
+ delete this;
+ return false;
+}
+
+void BufferedSocket::OnConnected() { }
+void BufferedSocket::OnTimeout() { return; }
+
+void BufferedSocket::OnEventHandlerWrite()
+{
+ 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();
+}
+
+BufferedSocket::~BufferedSocket()
+{
+ this->Close();
+ // The timer is removed from the TimerManager in Timer::~Timer()
+ delete Timeout;
+}
+
+void StreamSocket::OnEventHandlerError(int errornum)
+{
+ if (!error.empty())
+ return;
+
+ if (errornum == 0)
+ SetError("Connection closed");
+ else
+ SetError(SocketEngine::GetError(errornum));
+
+ 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;
+ }
+
+ // Log and call OnError()
+ CheckError(errcode);
+}
+
+void StreamSocket::OnEventHandlerRead()
+{
+ if (!error.empty())
+ return;
+
+ 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);
+}
+
+void StreamSocket::OnEventHandlerWrite()
+{
+ if (!error.empty())
+ return;
+
+ DoWrite();
+ CheckError(I_ERR_OTHER);
+}
+
+void StreamSocket::CheckError(BufferedSocketError errcode)
+{
+ if (!error.empty())
+ {
+ ServerInstance->Logs->Log("SOCKET", LOG_DEBUG, "Error on FD %d - '%s'", fd, error.c_str());
+ OnError(errcode);
+ }
+}
+
+IOHook* StreamSocket::GetModHook(Module* mod) const
+{
+ for (IOHook* curr = GetIOHook(); curr; curr = GetNextHook(curr))
+ {
+ if (curr->prov->creator == mod)
+ return curr;
+ }
+ return NULL;
+}
+
+void StreamSocket::AddIOHook(IOHook* newhook)
+{
+ IOHook* curr = GetIOHook();
+ if (!curr)
+ {
+ iohook = newhook;
+ return;
+ }
+
+ IOHookMiddle* lasthook;
+ while (curr)
+ {
+ lasthook = IOHookMiddle::ToMiddleHook(curr);
+ if (!lasthook)
+ return;
+ curr = lasthook->GetNextHook();
+ }
+
+ lasthook->SetNextHook(newhook);
+}
+
+size_t StreamSocket::getSendQSize() const
+{
+ size_t ret = sendq.bytes();
+ IOHook* curr = GetIOHook();
+ while (curr)
+ {
+ const IOHookMiddle* const iohm = IOHookMiddle::ToMiddleHook(curr);
+ if (!iohm)
+ break;
+
+ ret += iohm->GetSendQ().bytes();
+ curr = iohm->GetNextHook();
+ }
+ return ret;
+}