-/* +------------------------------------+
- * | Inspire Internet Relay Chat Daemon |
- * +------------------------------------+
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
*
- * InspIRCd: (C) 2002-2008 InspIRCd Development Team
- * See: http://www.inspircd.org/wiki/index.php/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/>.
*/
-/* $Core */
-
-/********* DEFAULTS **********/
-
-/* $ExtraSources: socketengines/socketengine_select.cpp */
-/* $ExtraObjects: socketengine_select.o */
-
-/* $If: USE_POLL */
-/* $ExtraSources: socketengines/socketengine_poll.cpp */
-/* $ExtraObjects: socketengine_poll.o */
-/* $EndIf */
-
-/* $If: USE_KQUEUE */
-/* $ExtraSources: socketengines/socketengine_kqueue.cpp */
-/* $ExtraObjects: socketengine_kqueue.o */
-/* $EndIf */
-/* $If: USE_EPOLL */
-/* $ExtraSources: socketengines/socketengine_epoll.cpp */
-/* $ExtraObjects: socketengine_epoll.o */
-/* $EndIf */
+#include "exitcodes.h"
+#include "inspircd.h"
-/* $If: USE_PORTS */
-/* $ExtraSources: socketengines/socketengine_ports.cpp */
-/* $ExtraObjects: socketengine_ports.o */
-/* $EndIf */
+#include <iostream>
-#include "inspircd.h"
-#include "socketengine.h"
+/** Reference table, contains all current handlers
+ **/
+std::vector<EventHandler*> SocketEngine::ref;
-bool EventHandler::AddIOHook(Module *IOHooker)
-{
- if (this->IOHook)
- return false;
+/** Current number of descriptors in the engine
+ */
+size_t SocketEngine::CurrentSetSize = 0;
- this->IOHook = IOHooker;
-}
+/** List of handlers that want a trial read/write
+ */
+std::set<int> SocketEngine::trials;
-bool EventHandler::DelIOHook()
-{
- if (!this->IOHook)
- return false
+size_t SocketEngine::MaxSetSize = 0;
- this->IOHook = false;
-}
+/** Socket engine statistics: count of various events, bandwidth usage
+ */
+SocketEngine::Statistics SocketEngine::stats;
-Module *EventHandler::GetIOHook()
+EventHandler::EventHandler()
{
- return this->IOHook;
+ fd = -1;
+ event_mask = 0;
}
-int EventHandler::GetFd()
+void EventHandler::SwapInternals(EventHandler& other)
{
- return this->fd;
+ std::swap(fd, other.fd);
+ std::swap(event_mask, other.event_mask);
}
void EventHandler::SetFd(int FD)
this->fd = FD;
}
-bool EventHandler::Readable()
+void EventHandler::OnEventHandlerWrite()
{
- return true;
}
-bool EventHandler::Writeable()
+void EventHandler::OnEventHandlerError(int errornum)
{
- return false;
}
-void SocketEngine::WantWrite(EventHandler* eh)
+void SocketEngine::InitError()
{
+ std::cerr << con_red << "FATAL ERROR!" << con_reset << " Socket engine initialization failed. " << strerror(errno) << '.' << std::endl;
+ exit(EXIT_STATUS_SOCKETENGINE);
}
-SocketEngine::SocketEngine(InspIRCd* Instance) : ServerInstance(Instance)
+void SocketEngine::LookupMaxFds()
{
- TotalEvents = WriteEvents = ReadEvents = ErrorEvents = 0;
- lastempty = time(NULL);
- indata = outdata = 0;
-}
+#if defined _WIN32
+ MaxSetSize = FD_SETSIZE;
+#else
+ struct rlimit limits;
+ if (!getrlimit(RLIMIT_NOFILE, &limits))
+ MaxSetSize = limits.rlim_cur;
-SocketEngine::~SocketEngine()
-{
+#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
}
-bool SocketEngine::AddFd(EventHandler* eh)
+void SocketEngine::ChangeEventMask(EventHandler* eh, int change)
{
- return true;
-}
+ int old_m = eh->event_mask;
+ int new_m = old_m;
-bool SocketEngine::HasFd(int fd)
-{
- if ((fd < 0) || (fd > MAX_DESCRIPTORS))
- return false;
- return ref[fd];
-}
+ // if we are changing read/write type, remove the previously set bit
+ if (change & FD_WANT_READ_MASK)
+ new_m &= ~FD_WANT_READ_MASK;
+ if (change & FD_WANT_WRITE_MASK)
+ new_m &= ~FD_WANT_WRITE_MASK;
-EventHandler* SocketEngine::GetRef(int fd)
-{
- if ((fd < 0) || (fd > MAX_DESCRIPTORS))
- return 0;
- return ref[fd];
+ // 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());
+
+ new_m |= change;
+ if (new_m == old_m)
+ return;
+
+ eh->event_mask = new_m;
+ OnSetEvent(eh, old_m, new_m);
}
-bool SocketEngine::DelFd(EventHandler* eh, bool force)
+void SocketEngine::DispatchTrialWrites()
{
- return true;
+ std::vector<int> working_list;
+ working_list.reserve(trials.size());
+ working_list.assign(trials.begin(), trials.end());
+ trials.clear();
+ for(unsigned int i=0; i < working_list.size(); i++)
+ {
+ int fd = working_list[i];
+ EventHandler* eh = GetRef(fd);
+ if (!eh)
+ continue;
+ 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->OnEventHandlerRead();
+ if ((mask & (FD_ADD_TRIAL_WRITE | FD_WRITE_WILL_BLOCK)) == FD_ADD_TRIAL_WRITE)
+ eh->OnEventHandlerWrite();
+ }
}
-int SocketEngine::GetMaxFds()
+bool SocketEngine::AddFdRef(EventHandler* eh)
{
- return 0;
+ int fd = eh->GetFd();
+ if (HasFd(fd))
+ return false;
+
+ while (static_cast<unsigned int>(fd) >= ref.size())
+ ref.resize(ref.empty() ? 1 : (ref.size() * 2));
+ ref[fd] = eh;
+ CurrentSetSize++;
+ return true;
}
-int SocketEngine::GetRemainingFds()
+void SocketEngine::DelFdRef(EventHandler *eh)
{
- return 0;
+ int fd = eh->GetFd();
+ if (GetRef(fd) == eh)
+ {
+ ref[fd] = NULL;
+ CurrentSetSize--;
+ }
}
-int SocketEngine::DispatchEvents()
+bool SocketEngine::HasFd(int fd)
{
- return 0;
+ return GetRef(fd) != NULL;
}
-std::string SocketEngine::GetName()
+EventHandler* SocketEngine::GetRef(int fd)
{
- return "misconfigured";
+ 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() > MAX_DESCRIPTORS))
- 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 flags = fcntl(fd, F_GETFL, 0);
- return fcntl(fd, F_SETFL, flags ^ O_NONBLOCK);
+ return fcntl(fd, F_SETFL, flags & ~O_NONBLOCK);
#endif
}
int SocketEngine::NonBlocking(int fd)
{
-#ifdef WINDOWS
+#ifdef _WIN32
unsigned long opt = 1;
return ioctlsocket(fd, FIONBIO, &opt);
#else
#endif
}
-int SocketEngine::GetSockName(EventHandler* fd, sockaddr *name, socklen_t* namelen)
+void SocketEngine::SetReuse(int fd)
{
- return getsockname(fd->GetFd(), name, namelen);
+ int on = 1;
+ setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (char*)&on, sizeof(on));
}
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(), (const 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(), (const 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->GetFd(), how);
}
-int SocketEngine::Bind(int fd, const sockaddr *my_addr, socklen_t addrlen)
+int SocketEngine::Bind(int fd, const irc::sockets::sockaddrs& addr)
{
- return bind(fd, my_addr, addrlen);
+ return bind(fd, &addr.sa, addr.sa_size());
}
int SocketEngine::Listen(int sockfd, int backlog)
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 != time(NULL))
+ // Reset the in/out byte counters if it has been more than a second
+ time_t now = ServerInstance->Time();
+ if (lastempty != now)
{
- lastempty = time(NULL);
+ 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