2 * InspIRCd -- Internet Relay Chat Daemon
4 * Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
5 * Copyright (C) 2008 Robin Burchell <robin+git@viroteck.net>
6 * Copyright (C) 2005-2008 Craig Edwards <craigedwards@brainbox.cc>
7 * Copyright (C) 2007 Burlex <???@???>
8 * Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
10 * This file is part of InspIRCd. InspIRCd is free software: you can
11 * redistribute it and/or modify it under the terms of the GNU General Public
12 * License as published by the Free Software Foundation, version 2.
14 * This program is distributed in the hope that it will be useful, but WITHOUT
15 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
16 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
19 * You should have received a copy of the GNU General Public License
20 * along with this program. If not, see <http://www.gnu.org/licenses/>.
26 EventHandler::EventHandler()
32 void EventHandler::SetFd(int FD)
37 SocketEngine::SocketEngine()
42 SocketEngine::~SocketEngine()
46 void SocketEngine::SetEventMask(EventHandler* eh, int mask)
48 eh->event_mask = mask;
51 void SocketEngine::ChangeEventMask(EventHandler* eh, int change)
53 int old_m = eh->event_mask;
56 // if we are changing read/write type, remove the previously set bit
57 if (change & FD_WANT_READ_MASK)
58 new_m &= ~FD_WANT_READ_MASK;
59 if (change & FD_WANT_WRITE_MASK)
60 new_m &= ~FD_WANT_WRITE_MASK;
62 // if adding a trial read/write, insert it into the set
63 if (change & FD_TRIAL_NOTE_MASK && !(old_m & FD_TRIAL_NOTE_MASK))
64 trials.insert(eh->GetFd());
70 eh->event_mask = new_m;
71 OnSetEvent(eh, old_m, new_m);
74 void SocketEngine::DispatchTrialWrites()
76 std::vector<int> working_list;
77 working_list.reserve(trials.size());
78 working_list.assign(trials.begin(), trials.end());
80 for(unsigned int i=0; i < working_list.size(); i++)
82 int fd = working_list[i];
83 EventHandler* eh = GetRef(fd);
86 int mask = eh->event_mask;
87 eh->event_mask &= ~(FD_ADD_TRIAL_READ | FD_ADD_TRIAL_WRITE);
88 if ((mask & (FD_ADD_TRIAL_READ | FD_READ_WILL_BLOCK)) == FD_ADD_TRIAL_READ)
89 eh->HandleEvent(EVENT_READ, 0);
90 if ((mask & (FD_ADD_TRIAL_WRITE | FD_WRITE_WILL_BLOCK)) == FD_ADD_TRIAL_WRITE)
91 eh->HandleEvent(EVENT_WRITE, 0);
95 bool SocketEngine::AddFdRef(EventHandler* eh)
101 while (static_cast<unsigned int>(fd) >= ref.size())
102 ref.resize(ref.empty() ? 1 : (ref.size() * 2));
108 void SocketEngine::DelFdRef(EventHandler *eh)
110 int fd = eh->GetFd();
111 if (GetRef(fd) == eh)
118 bool SocketEngine::HasFd(int fd)
120 return GetRef(fd) != NULL;
123 EventHandler* SocketEngine::GetRef(int fd)
125 if (fd < 0 || static_cast<unsigned int>(fd) >= ref.size())
130 bool SocketEngine::BoundsCheckFd(EventHandler* eh)
134 if ((eh->GetFd() < 0) || (eh->GetFd() > GetMaxFds()))
140 int SocketEngine::Accept(EventHandler* fd, sockaddr *addr, socklen_t *addrlen)
142 return accept(fd->GetFd(), addr, addrlen);
145 int SocketEngine::Close(EventHandler* fd)
148 return closesocket(fd->GetFd());
150 return close(fd->GetFd());
154 int SocketEngine::Close(int fd)
157 return closesocket(fd);
163 int SocketEngine::Blocking(int fd)
166 unsigned long opt = 0;
167 return ioctlsocket(fd, FIONBIO, &opt);
169 int flags = fcntl(fd, F_GETFL, 0);
170 return fcntl(fd, F_SETFL, flags & ~O_NONBLOCK);
174 int SocketEngine::NonBlocking(int fd)
177 unsigned long opt = 1;
178 return ioctlsocket(fd, FIONBIO, &opt);
180 int flags = fcntl(fd, F_GETFL, 0);
181 return fcntl(fd, F_SETFL, flags | O_NONBLOCK);
185 void SocketEngine::SetReuse(int fd)
188 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (char*)&on, sizeof(on));
191 int SocketEngine::RecvFrom(EventHandler* fd, void *buf, size_t len, int flags, sockaddr *from, socklen_t *fromlen)
193 int nbRecvd = recvfrom(fd->GetFd(), (char*)buf, len, flags, from, fromlen);
195 stats.Update(nbRecvd, 0);
199 int SocketEngine::Send(EventHandler* fd, const void *buf, size_t len, int flags)
201 int nbSent = send(fd->GetFd(), (const char*)buf, len, flags);
203 stats.Update(0, nbSent);
207 int SocketEngine::Recv(EventHandler* fd, void *buf, size_t len, int flags)
209 int nbRecvd = recv(fd->GetFd(), (char*)buf, len, flags);
211 stats.Update(nbRecvd, 0);
215 int SocketEngine::SendTo(EventHandler* fd, const void *buf, size_t len, int flags, const sockaddr *to, socklen_t tolen)
217 int nbSent = sendto(fd->GetFd(), (const char*)buf, len, flags, to, tolen);
219 stats.Update(0, nbSent);
223 int SocketEngine::Connect(EventHandler* fd, const sockaddr *serv_addr, socklen_t addrlen)
225 int ret = connect(fd->GetFd(), serv_addr, addrlen);
227 if ((ret == SOCKET_ERROR) && (WSAGetLastError() == WSAEWOULDBLOCK))
233 int SocketEngine::Shutdown(EventHandler* fd, int how)
235 return shutdown(fd->GetFd(), how);
238 int SocketEngine::Bind(int fd, const irc::sockets::sockaddrs& addr)
240 return bind(fd, &addr.sa, addr.sa_size());
243 int SocketEngine::Listen(int sockfd, int backlog)
245 return listen(sockfd, backlog);
248 int SocketEngine::Shutdown(int fd, int how)
250 return shutdown(fd, how);
253 void SocketEngine::RecoverFromFork()
257 void SocketEngine::Statistics::Update(size_t len_in, size_t len_out)
264 void SocketEngine::Statistics::CheckFlush() const
266 // Reset the in/out byte counters if it has been more than a second
267 time_t now = ServerInstance->Time();
268 if (lastempty != now)
271 indata = outdata = 0;
275 void SocketEngine::Statistics::GetBandwidth(float& kbitpersec_in, float& kbitpersec_out, float& kbitpersec_total) const
278 float in_kbit = indata * 8;
279 float out_kbit = outdata * 8;
280 kbitpersec_total = ((in_kbit + out_kbit) / 1024);
281 kbitpersec_in = in_kbit / 1024;
282 kbitpersec_out = out_kbit / 1024;
285 std::string SocketEngine::LastError()
288 return strerror(errno);
290 char szErrorString[500];
291 DWORD dwErrorCode = WSAGetLastError();
292 if (FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL, dwErrorCode, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPSTR)szErrorString, _countof(szErrorString), NULL) == 0)
293 sprintf_s(szErrorString, _countof(szErrorString), "Error code: %u", dwErrorCode);
294 return szErrorString;
298 std::string SocketEngine::GetError(int errnum)
301 return strerror(errnum);
303 WSASetLastError(errnum);