-/* +------------------------------------+
- * | Inspire Internet Relay Chat Daemon |
- * +------------------------------------+
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
*
- * InspIRCd: (C) 2002-2009 InspIRCd Development Team
- * See: http://wiki.inspircd.org/Credits
+ * Copyright (C) 2017-2020 Sadie Powell <sadie@witchery.services>
+ * Copyright (C) 2013-2014 Adam <Adam@anope.org>
+ * Copyright (C) 2012, 2014-2015 Attila Molnar <attilamolnar@hush.com>
+ * Copyright (C) 2012 Robby <robby@chatbelgie.be>
+ * Copyright (C) 2012 ChrisTX <xpipe@hotmail.de>
+ * Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
+ * Copyright (C) 2008, 2017 Robin Burchell <robin+git@viroteck.net>
+ * Copyright (C) 2007 burlex <burlex@e03df62e-2008-0410-955e-edbf42e46eb7>
+ * Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
+ * Copyright (C) 2006-2008, 2010 Craig Edwards <brain@inspircd.org>
*
- * This program is free but copyrighted software; see
- * the file COPYING for details.
+ * 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 "exitcodes.h"
#include "inspircd.h"
+#include <iostream>
+
+/** Reference table, contains all current handlers
+ **/
+std::vector<EventHandler*> SocketEngine::ref;
+
+/** Current number of descriptors in the engine
+ */
+size_t SocketEngine::CurrentSetSize = 0;
+
+/** List of handlers that want a trial read/write
+ */
+std::set<int> SocketEngine::trials;
+
+size_t SocketEngine::MaxSetSize = 0;
+
+/** Socket engine statistics: count of various events, bandwidth usage
+ */
+SocketEngine::Statistics SocketEngine::stats;
+
EventHandler::EventHandler()
{
fd = -1;
+ event_mask = 0;
+}
+
+void EventHandler::SwapInternals(EventHandler& other)
+{
+ std::swap(fd, other.fd);
+ std::swap(event_mask, other.event_mask);
}
void EventHandler::SetFd(int FD)
this->fd = FD;
}
-SocketEngine::SocketEngine()
+void EventHandler::OnEventHandlerWrite()
+{
+}
+
+void EventHandler::OnEventHandlerError(int errornum)
{
- TotalEvents = WriteEvents = ReadEvents = ErrorEvents = 0;
- lastempty = ServerInstance->Time();
- indata = outdata = 0;
}
-SocketEngine::~SocketEngine()
+void SocketEngine::InitError()
{
+ std::cerr << con_red << "FATAL ERROR!" << con_reset << " Socket engine initialization failed. " << strerror(errno) << '.' << std::endl;
+ exit(EXIT_STATUS_SOCKETENGINE);
}
-void SocketEngine::SetEventMask(EventHandler* eh, int mask)
+void SocketEngine::LookupMaxFds()
{
- eh->event_mask = mask;
+#if defined _WIN32
+ MaxSetSize = FD_SETSIZE;
+#else
+ struct rlimit limits;
+ if (!getrlimit(RLIMIT_NOFILE, &limits))
+ MaxSetSize = limits.rlim_cur;
+
+#if defined __APPLE__
+ limits.rlim_cur = limits.rlim_max == RLIM_INFINITY ? OPEN_MAX : limits.rlim_max;
+#else
+ limits.rlim_cur = limits.rlim_max;
+#endif
+ if (!setrlimit(RLIMIT_NOFILE, &limits))
+ MaxSetSize = limits.rlim_cur;
+#endif
}
void SocketEngine::ChangeEventMask(EventHandler* eh, int change)
new_m &= ~FD_WANT_READ_MASK;
if (change & FD_WANT_WRITE_MASK)
new_m &= ~FD_WANT_WRITE_MASK;
-
+
// if adding a trial read/write, insert it into the set
if (change & FD_TRIAL_NOTE_MASK && !(old_m & FD_TRIAL_NOTE_MASK))
trials.insert(eh->GetFd());
int mask = eh->event_mask;
eh->event_mask &= ~(FD_ADD_TRIAL_READ | FD_ADD_TRIAL_WRITE);
if ((mask & (FD_ADD_TRIAL_READ | FD_READ_WILL_BLOCK)) == FD_ADD_TRIAL_READ)
- eh->HandleEvent(EVENT_READ, 0);
+ eh->OnEventHandlerRead();
if ((mask & (FD_ADD_TRIAL_WRITE | FD_WRITE_WILL_BLOCK)) == FD_ADD_TRIAL_WRITE)
- eh->HandleEvent(EVENT_WRITE, 0);
+ eh->OnEventHandlerWrite();
}
}
-bool SocketEngine::HasFd(int fd)
+bool SocketEngine::AddFdRef(EventHandler* eh)
{
- if ((fd < 0) || (fd > GetMaxFds()))
+ int fd = eh->GetFd();
+ if (HasFd(fd))
return false;
- return ref[fd];
+
+ while (static_cast<unsigned int>(fd) >= ref.size())
+ ref.resize(ref.empty() ? 1 : (ref.size() * 2));
+ ref[fd] = eh;
+ CurrentSetSize++;
+ return true;
+}
+
+void SocketEngine::DelFdRef(EventHandler *eh)
+{
+ int fd = eh->GetFd();
+ if (GetRef(fd) == eh)
+ {
+ ref[fd] = NULL;
+ CurrentSetSize--;
+ }
+}
+
+bool SocketEngine::HasFd(int fd)
+{
+ return GetRef(fd) != NULL;
}
EventHandler* SocketEngine::GetRef(int fd)
{
- if ((fd < 0) || (fd > GetMaxFds()))
- return 0;
+ if (fd < 0 || static_cast<unsigned int>(fd) >= ref.size())
+ return NULL;
return ref[fd];
}
bool SocketEngine::BoundsCheckFd(EventHandler* eh)
{
- if (!eh)
- return false;
- if ((eh->GetFd() < 0) || (eh->GetFd() > GetMaxFds()))
- return false;
- return true;
+ return eh && eh->HasFd();
}
return accept(fd->GetFd(), addr, addrlen);
}
-int SocketEngine::Close(EventHandler* fd)
+int SocketEngine::Close(EventHandler* eh)
{
-#ifdef WINDOWS
- return closesocket(fd->GetFd());
-#else
- return close(fd->GetFd());
-#endif
+ DelFd(eh);
+ int ret = Close(eh->GetFd());
+ eh->SetFd(-1);
+ return ret;
}
int SocketEngine::Close(int fd)
{
-#ifdef WINDOWS
+#ifdef _WIN32
return closesocket(fd);
#else
return close(fd);
int SocketEngine::Blocking(int fd)
{
-#ifdef WINDOWS
+#ifdef _WIN32
unsigned long opt = 0;
return ioctlsocket(fd, FIONBIO, &opt);
#else
int SocketEngine::NonBlocking(int fd)
{
-#ifdef WINDOWS
+#ifdef _WIN32
unsigned long opt = 1;
return ioctlsocket(fd, FIONBIO, &opt);
#else
void SocketEngine::SetReuse(int fd)
{
int on = 1;
- struct linger linger = { 0, 0 };
setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (char*)&on, sizeof(on));
- /* This is BSD compatible, setting l_onoff to 0 is *NOT* http://web.irc.org/mla/ircd-dev/msg02259.html */
- linger.l_onoff = 1;
- linger.l_linger = 1;
- setsockopt(fd, SOL_SOCKET, SO_LINGER, (char*)&linger, sizeof(linger));
}
int SocketEngine::RecvFrom(EventHandler* fd, void *buf, size_t len, int flags, sockaddr *from, socklen_t *fromlen)
{
- this->UpdateStats(len, 0);
- return recvfrom(fd->GetFd(), (char*)buf, len, flags, from, fromlen);
+ int nbRecvd = recvfrom(fd->GetFd(), (char*)buf, len, flags, from, fromlen);
+ stats.UpdateReadCounters(nbRecvd);
+ return nbRecvd;
}
int SocketEngine::Send(EventHandler* fd, const void *buf, size_t len, int flags)
{
- this->UpdateStats(0, len);
- return send(fd->GetFd(), (char*)buf, len, flags);
+ int nbSent = send(fd->GetFd(), (const char*)buf, len, flags);
+ stats.UpdateWriteCounters(nbSent);
+ return nbSent;
}
int SocketEngine::Recv(EventHandler* fd, void *buf, size_t len, int flags)
{
- this->UpdateStats(len, 0);
- return recv(fd->GetFd(), (char*)buf, len, flags);
+ int nbRecvd = recv(fd->GetFd(), (char*)buf, len, flags);
+ stats.UpdateReadCounters(nbRecvd);
+ return nbRecvd;
}
-int SocketEngine::SendTo(EventHandler* fd, const void *buf, size_t len, int flags, const sockaddr *to, socklen_t tolen)
+int SocketEngine::SendTo(EventHandler* fd, const void* buf, size_t len, int flags, const irc::sockets::sockaddrs& address)
{
- this->UpdateStats(0, len);
- return sendto(fd->GetFd(), (char*)buf, len, flags, to, tolen);
+ int nbSent = sendto(fd->GetFd(), (const char*)buf, len, flags, &address.sa, address.sa_size());
+ stats.UpdateWriteCounters(nbSent);
+ return nbSent;
}
-int SocketEngine::Connect(EventHandler* fd, const sockaddr *serv_addr, socklen_t addrlen)
+int SocketEngine::WriteV(EventHandler* fd, const IOVector* iovec, int count)
{
- return connect(fd->GetFd(), serv_addr, addrlen);
+ int sent = writev(fd->GetFd(), iovec, count);
+ stats.UpdateWriteCounters(sent);
+ return sent;
+}
+
+#ifdef _WIN32
+int SocketEngine::WriteV(EventHandler* fd, const iovec* iovec, int count)
+{
+ // On Windows the fields in iovec are not in the order required by the Winsock API; IOVector has
+ // the fields in the correct order.
+ // Create temporary IOVectors from the iovecs and pass them to the WriteV() method that accepts the
+ // platform's native struct.
+ IOVector wiovec[128];
+ count = std::min(count, static_cast<int>(sizeof(wiovec) / sizeof(IOVector)));
+
+ for (int i = 0; i < count; i++)
+ {
+ wiovec[i].iov_len = iovec[i].iov_len;
+ wiovec[i].iov_base = reinterpret_cast<char*>(iovec[i].iov_base);
+ }
+ return WriteV(fd, wiovec, count);
+}
+#endif
+
+int SocketEngine::Connect(EventHandler* fd, const irc::sockets::sockaddrs& address)
+{
+ int ret = connect(fd->GetFd(), &address.sa, address.sa_size());
+#ifdef _WIN32
+ if ((ret == SOCKET_ERROR) && (WSAGetLastError() == WSAEWOULDBLOCK))
+ errno = EINPROGRESS;
+#endif
+ return ret;
}
int SocketEngine::Shutdown(EventHandler* fd, int how)
return shutdown(fd, how);
}
-void SocketEngine::RecoverFromFork()
+void SocketEngine::Statistics::UpdateReadCounters(int len_in)
{
+ CheckFlush();
+
+ ReadEvents++;
+ if (len_in > 0)
+ indata += len_in;
+ else if (len_in < 0)
+ ErrorEvents++;
+}
+
+void SocketEngine::Statistics::UpdateWriteCounters(int len_out)
+{
+ CheckFlush();
+
+ WriteEvents++;
+ if (len_out > 0)
+ outdata += len_out;
+ else if (len_out < 0)
+ ErrorEvents++;
}
-void SocketEngine::UpdateStats(size_t len_in, size_t len_out)
+void SocketEngine::Statistics::CheckFlush() const
{
- if (lastempty != ServerInstance->Time())
+ // Reset the in/out byte counters if it has been more than a second
+ time_t now = ServerInstance->Time();
+ if (lastempty != now)
{
- lastempty = ServerInstance->Time();
+ lastempty = now;
indata = outdata = 0;
}
- indata += len_in;
- outdata += len_out;
}
-void SocketEngine::GetStats(float &kbitpersec_in, float &kbitpersec_out, float &kbitpersec_total)
+void SocketEngine::Statistics::GetBandwidth(float& kbitpersec_in, float& kbitpersec_out, float& kbitpersec_total) const
{
- UpdateStats(0, 0); /* Forces emptying of the values if its been more than a second */
+ CheckFlush();
float in_kbit = indata * 8;
float out_kbit = outdata * 8;
kbitpersec_total = ((in_kbit + out_kbit) / 1024);
kbitpersec_in = in_kbit / 1024;
kbitpersec_out = out_kbit / 1024;
}
+
+std::string SocketEngine::LastError()
+{
+#ifndef _WIN32
+ return strerror(errno);
+#else
+ char szErrorString[500];
+ DWORD dwErrorCode = WSAGetLastError();
+ if (FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL, dwErrorCode, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPSTR)szErrorString, _countof(szErrorString), NULL) == 0)
+ sprintf_s(szErrorString, _countof(szErrorString), "Error code: %u", dwErrorCode);
+
+ std::string::size_type p;
+ std::string ret = szErrorString;
+ while ((p = ret.find_last_of("\r\n")) != std::string::npos)
+ ret.erase(p, 1);
+
+ return ret;
+#endif
+}
+
+std::string SocketEngine::GetError(int errnum)
+{
+#ifndef _WIN32
+ return strerror(errnum);
+#else
+ WSASetLastError(errnum);
+ return LastError();
+#endif
+}
projects / user / henk / code / inspircd.git / blobdiff