-/* +------------------------------------+\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
+/* +------------------------------------+
+ * | Inspire Internet Relay Chat Daemon |
+ * +------------------------------------+
+ *
+ * InspIRCd: (C) 2002-2009 InspIRCd Development Team
+ * See: http://wiki.inspircd.org/Credits
+ *
+ * This program is free but copyrighted software; see
+ * the file COPYING for details.
+ *
+ * ---------------------------------------------------
+ */
+
+#include "inspircd.h"
+#include "socket.h"
+#include "inspstring.h"
+#include "socketengine.h"
+
+#ifndef DISABLE_WRITEV
+#include <sys/uio.h>
+#ifndef IOV_MAX
+#define IOV_MAX 1024
+#endif
+#endif
+
+BufferedSocket::BufferedSocket()
+{
+ Timeout = NULL;
+ state = I_ERROR;
+}
+
+BufferedSocket::BufferedSocket(int newfd)
+{
+ Timeout = NULL;
+ this->fd = newfd;
+ this->state = I_CONNECTED;
+ if (fd > -1)
+ ServerInstance->SE->AddFd(this, FD_WANT_FAST_READ | FD_WANT_EDGE_WRITE);
+}
+
+void BufferedSocket::DoConnect(const std::string &ipaddr, int aport, unsigned long maxtime, const std::string &connectbindip)
+{
+ BufferedSocketError err = BeginConnect(ipaddr, aport, maxtime, connectbindip);
+ if (err != I_ERR_NONE)
+ {
+ state = I_ERROR;
+ SetError(strerror(errno));
+ OnError(err);
+ }
+}
+
+BufferedSocketError BufferedSocket::BeginConnect(const std::string &ipaddr, int aport, unsigned long maxtime, const std::string &connectbindip)
+{
+ irc::sockets::sockaddrs addr, bind;
+ if (!irc::sockets::aptosa(ipaddr, aport, &addr))
+ {
+ ServerInstance->Logs->Log("SOCKET", 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);
+}
+
+static void IncreaseOSBuffers(int fd)
+{
+ // attempt to increase socket sendq and recvq as high as its possible
+ int sendbuf = 32768;
+ int recvbuf = 32768;
+ setsockopt(fd,SOL_SOCKET,SO_SNDBUF,(const char *)&sendbuf,sizeof(sendbuf));
+ setsockopt(fd,SOL_SOCKET,SO_RCVBUF,(const char *)&recvbuf,sizeof(recvbuf));
+ // on failure, 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.
+}
+
+BufferedSocketError BufferedSocket::BeginConnect(const irc::sockets::sockaddrs& dest, const irc::sockets::sockaddrs& bind, unsigned long 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 (ServerInstance->SE->Bind(fd, &bind.sa, sa_size(bind)) < 0)
+ return I_ERR_BIND;
+ }
+
+ ServerInstance->SE->NonBlocking(fd);
+
+ if (ServerInstance->SE->Connect(this, &dest.sa, sa_size(dest)) == -1)
+ {
+ if (errno != EINPROGRESS)
+ return I_ERR_CONNECT;
+ }
+
+ this->state = I_CONNECTING;
+
+ if (!ServerInstance->SE->AddFd(this, FD_WANT_NO_READ | FD_WANT_SINGLE_WRITE))
+ return I_ERR_NOMOREFDS;
+
+ this->Timeout = new SocketTimeout(this->GetFd(), this, timeout, ServerInstance->Time());
+ ServerInstance->Timers->AddTimer(this->Timeout);
+
+ IncreaseOSBuffers(fd);
+
+ ServerInstance->Logs->Log("SOCKET", DEBUG,"BufferedSocket::DoConnect success");
+ return I_ERR_NONE;
+}
+
+void StreamSocket::Close()
+{
+ /* Save this, so we dont lose it,
+ * otherise on failure, error messages
+ * might be inaccurate.
+ */
+ int save = errno;
+ if (this->fd > -1)
+ {
+ if (IOHook)
+ {
+ try
+ {
+ IOHook->OnStreamSocketClose(this);
+ }
+ catch (CoreException& modexcept)
+ {
+ ServerInstance->Logs->Log("SOCKET", DEFAULT,"%s threw an exception: %s",
+ modexcept.GetSource(), modexcept.GetReason());
+ }
+ }
+ ServerInstance->SE->Shutdown(this, 2);
+ ServerInstance->SE->DelFd(this);
+ ServerInstance->SE->Close(this);
+ fd = -1;
+ }
+ errno = save;
+}
+
+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 = recvq.substr(0, i - 1);
+ // TODO is this the most efficient way to split?
+ recvq = recvq.substr(i + 1);
+ return true;
+}
+
+void StreamSocket::DoRead()
+{
+ if (IOHook)
+ {
+ int rv = -1;
+ try
+ {
+ rv = IOHook->OnStreamSocketRead(this, recvq);
+ }
+ catch (CoreException& modexcept)
+ {
+ ServerInstance->Logs->Log("SOCKET", DEFAULT, "%s threw an exception: %s",
+ modexcept.GetSource(), modexcept.GetReason());
+ return;
+ }
+ if (rv > 0)
+ OnDataReady();
+ if (rv < 0)
+ SetError("Read Error"); // will not overwrite a better error message
+ }
+ else
+ {
+ char* ReadBuffer = ServerInstance->GetReadBuffer();
+ int n = recv(fd, ReadBuffer, ServerInstance->Config->NetBufferSize, 0);
+ if (n == ServerInstance->Config->NetBufferSize)
+ {
+ ServerInstance->SE->ChangeEventMask(this, FD_WANT_FAST_READ | FD_ADD_TRIAL_READ);
+ recvq.append(ReadBuffer, n);
+ OnDataReady();
+ }
+ else if (n > 0)
+ {
+ ServerInstance->SE->ChangeEventMask(this, FD_WANT_FAST_READ);
+ recvq.append(ReadBuffer, n);
+ OnDataReady();
+ }
+ else if (n == 0)
+ {
+ error = "Connection closed";
+ ServerInstance->SE->ChangeEventMask(this, FD_WANT_NO_READ | FD_WANT_NO_WRITE);
+ }
+ else if (errno == EAGAIN)
+ {
+ ServerInstance->SE->ChangeEventMask(this, FD_WANT_FAST_READ | FD_READ_WILL_BLOCK);
+ }
+ else if (errno == EINTR)
+ {
+ ServerInstance->SE->ChangeEventMask(this, FD_WANT_FAST_READ | FD_ADD_TRIAL_READ);
+ }
+ else
+ {
+ error = strerror(errno);
+ ServerInstance->SE->ChangeEventMask(this, FD_WANT_NO_READ | FD_WANT_NO_WRITE);
+ }
+ }
+}
+
+void StreamSocket::DoWrite()
+{
+ if (sendq.empty())
+ return;
+ if (!error.empty() || fd < 0 || fd == INT_MAX)
+ {
+ ServerInstance->Logs->Log("SOCKET", DEBUG, "DoWrite on errored or closed socket");
+ return;
+ }
+
+#ifndef DISABLE_WRITEV
+ if (IOHook)
+#endif
+ {
+ int rv = -1;
+ try
+ {
+ while (!sendq.empty())
+ {
+ if (sendq.size() > 1 && sendq[0].length() < 1024)
+ {
+ // Avoid multiple repeated SSL encryption invocations
+ // This adds a single copy of the queue, but avoids
+ // much more overhead in terms of system calls invoked
+ // by the IOHook.
+ //
+ // The length limit of 1024 is to prevent merging strings
+ // more than once when writes begin to block.
+ std::string tmp;
+ tmp.reserve(sendq_len);
+ for(unsigned int i=0; i < sendq.size(); i++)
+ tmp.append(sendq[i]);
+ sendq.clear();
+ sendq.push_back(tmp);
+ }
+ std::string& front = sendq.front();
+ int itemlen = front.length();
+ if (IOHook)
+ {
+ rv = IOHook->OnStreamSocketWrite(this, front);
+ if (rv > 0)
+ {
+ // consumed the entire string, and is ready for more
+ sendq_len -= itemlen;
+ sendq.pop_front();
+ }
+ else if (rv == 0)
+ {
+ // socket has blocked. Stop trying to send data.
+ // IOHook has requested unblock notification from the socketengine
+
+ // Since it is possible that a partial write took place, adjust sendq_len
+ sendq_len = sendq_len - itemlen + front.length();
+ return;
+ }
+ else
+ {
+ SetError("Write Error"); // will not overwrite a better error message
+ return;
+ }
+ }
+#ifdef DISABLE_WRITEV
+ else
+ {
+ rv = ServerInstance->SE->Send(this, front.data(), itemlen, 0);
+ if (rv == 0)
+ {
+ SetError("Connection closed");
+ return;
+ }
+ else if (rv < 0)
+ {
+ if (errno == EAGAIN || errno == EINTR)
+ ServerInstance->SE->ChangeEventMask(this, FD_WANT_FAST_WRITE | FD_WRITE_WILL_BLOCK);
+ else
+ SetError(strerror(errno));
+ return;
+ }
+ else if (rv < itemlen)
+ {
+ ServerInstance->SE->ChangeEventMask(this, FD_WANT_FAST_WRITE | FD_WRITE_WILL_BLOCK);
+ front = front.substr(itemlen - rv);
+ sendq_len -= rv;
+ return;
+ }
+ else
+ {
+ sendq_len -= itemlen;
+ sendq.pop_front();
+ if (sendq.empty())
+ ServerInstance->SE->ChangeEventMask(this, FD_WANT_EDGE_WRITE);
+ }
+ }
+#endif
+ }
+ }
+ catch (CoreException& modexcept)
+ {
+ ServerInstance->Logs->Log("SOCKET", DEBUG,"%s threw an exception: %s",
+ modexcept.GetSource(), modexcept.GetReason());
+ }
+ }
+#ifndef DISABLE_WRITEV
+ else
+ {
+ // 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 (sendq_len && eventChange == FD_WANT_EDGE_WRITE)
+ {
+ // Prepare a writev() call to write all buffers efficiently
+ int bufcount = sendq.size();
+
+ // cap the number of buffers at IOV_MAX
+ if (bufcount > IOV_MAX)
+ {
+ bufcount = IOV_MAX;
+ }
+
+ int rv_max = 0;
+ iovec* iovecs = new iovec[bufcount];
+ for(int i=0; i < bufcount; i++)
+ {
+ iovecs[i].iov_base = const_cast<char*>(sendq[i].data());
+ iovecs[i].iov_len = sendq[i].length();
+ rv_max += sendq[i].length();
+ }
+ int rv = writev(fd, iovecs, bufcount);
+ delete[] iovecs;
+
+ if (rv == (int)sendq_len)
+ {
+ // it's our lucky day, everything got written out. Fast cleanup.
+ // This won't ever happen if the number of buffers got capped.
+ sendq_len = 0;
+ sendq.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;
+ }
+ sendq_len -= rv;
+ while (rv > 0 && !sendq.empty())
+ {
+ std::string& front = sendq.front();
+ if (front.length() <= (size_t)rv)
+ {
+ // this string got fully written out
+ rv -= front.length();
+ sendq.pop_front();
+ }
+ else
+ {
+ // stopped in the middle of this string
+ front = front.substr(rv);
+ rv = 0;
+ }
+ }
+ }
+ else if (rv == 0)
+ {
+ error = "Connection closed";
+ }
+ else if (errno == EAGAIN)
+ {
+ eventChange = FD_WANT_FAST_WRITE | FD_WRITE_WILL_BLOCK;
+ }
+ else if (errno == EINTR)
+ {
+ // restart interrupted syscall
+ }
+ else
+ {
+ error = strerror(errno);
+ }
+ }
+ if (!error.empty())
+ {
+ // error - kill all events
+ ServerInstance->SE->ChangeEventMask(this, FD_WANT_NO_READ | FD_WANT_NO_WRITE);
+ }
+ else
+ {
+ ServerInstance->SE->ChangeEventMask(this, eventChange);
+ }
+ }
+#endif
+}
+
+void StreamSocket::WriteData(const std::string &data)
+{
+ if (fd < 0)
+ {
+ ServerInstance->Logs->Log("SOCKET", 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);
+ sendq_len += data.length();
+
+ ServerInstance->SE->ChangeEventMask(this, FD_ADD_TRIAL_WRITE);
+}
+
+void SocketTimeout::Tick(time_t)
+{
+ ServerInstance->Logs->Log("SOCKET", DEBUG,"SocketTimeout::Tick");
+
+ if (ServerInstance->SE->GetRef(this->sfd) != this->sock)
+ return;
+
+ 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);
+
+ /* 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;
+
+ ServerInstance->GlobalCulls.AddItem(sock);
+ }
+
+ this->sock->Timeout = NULL;
+}
+
+void BufferedSocket::OnConnected() { }
+void BufferedSocket::OnTimeout() { return; }
+
+void BufferedSocket::DoWrite()
+{
+ if (state == I_CONNECTING)
+ {
+ state = I_CONNECTED;
+ this->OnConnected();
+ if (GetIOHook())
+ GetIOHook()->OnStreamSocketConnect(this);
+ else
+ ServerInstance->SE->ChangeEventMask(this, FD_WANT_FAST_READ | FD_WANT_EDGE_WRITE);
+ }
+ this->StreamSocket::DoWrite();
+}
+
+BufferedSocket::~BufferedSocket()
+{
+ this->Close();
+ if (Timeout)
+ {
+ ServerInstance->Timers->DelTimer(Timeout);
+ Timeout = NULL;
+ }
+}
+
+void StreamSocket::HandleEvent(EventType et, int errornum)
+{
+ if (!error.empty())
+ return;
+ BufferedSocketError errcode = I_ERR_OTHER;
+ switch (et)
+ {
+ case EVENT_ERROR:
+ {
+ if (errornum == 0)
+ SetError("Connection closed");
+ else
+ SetError(strerror(errornum));
+ 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;
+ }
+ break;
+ }
+ case EVENT_READ:
+ {
+ DoRead();
+ break;
+ }
+ case EVENT_WRITE:
+ {
+ DoWrite();
+ break;
+ }
+ }
+ if (!error.empty())
+ {
+ ServerInstance->Logs->Log("SOCKET", DEBUG, "Error on FD %d - '%s'", fd, error.c_str());
+ OnError(errcode);
+ ServerInstance->GlobalCulls.AddItem(this);
+ }
+}
+
projects / user / henk / code / inspircd.git / blobdiff