1 /* +------------------------------------+
2 * | Inspire Internet Relay Chat Daemon |
3 * +------------------------------------+
5 * InspIRCd: (C) 2002-2007 InspIRCd Development Team
6 * See: http://www.inspircd.org/wiki/index.php/Credits
8 * This program is free but copyrighted software; see
9 * the file COPYING for details.
11 * ---------------------------------------------------
14 #include "socketengine_iocp.h"
15 #include "exitcodes.h"
18 IOCPEngine::IOCPEngine(InspIRCd * Instance) : SocketEngine(Instance)
20 /* Create completion port */
21 m_completionPort = CreateIoCompletionPort(INVALID_HANDLE_VALUE, NULL, (ULONG_PTR)0, 0);
23 if (!m_completionPort)
25 ServerInstance->Log(SPARSE,"ERROR: Could not initialize socket engine. Your kernel probably does not have the proper features.");
26 ServerInstance->Log(SPARSE,"ERROR: this is a fatal error, exiting now.");
27 printf("ERROR: Could not initialize socket engine. Your kernel probably does not have the proper features.");
28 printf("ERROR: this is a fatal error, exiting now.");
29 InspIRCd::Exit(EXIT_STATUS_SOCKETENGINE);
32 /* Null variables out. */
35 memset(ref, 0, sizeof(EventHandler*) * MAX_DESCRIPTORS);
38 IOCPEngine::~IOCPEngine()
40 CloseHandle(m_completionPort);
43 bool IOCPEngine::AddFd(EventHandler* eh)
45 /* Does it at least look valid? */
49 int fake_fd = GenerateFd(eh->GetFd());
51 int opt_len = sizeof(int);
54 if ((fake_fd < 0) || (fake_fd > MAX_DESCRIPTORS))
57 /* Already an entry here */
61 /* are we a listen socket? */
62 getsockopt(eh->GetFd(), SOL_SOCKET, SO_ACCEPTCONN, (char*)&is_accept, &opt_len);
64 /* set up the read event so the socket can actually receive data :P */
65 eh->m_internalFd = fake_fd;
67 eh->m_acceptEvent = 0;
69 unsigned long completion_key = (ULONG_PTR)eh->m_internalFd;
70 /* assign the socket to the completion port */
71 if (!CreateIoCompletionPort((HANDLE)eh->GetFd(), m_completionPort, completion_key, 0))
74 /* set up binding, increase set size */
78 /* setup initial events */
85 ServerInstance->Log(DEBUG, "New fake fd: %u, real fd: %u, address 0x%p", fake_fd, eh->GetFd(), eh);
87 /* post a write event if there is data to be written */
91 /* we're all good =) */
94 m_binding.insert( map<int, EventHandler*>::value_type( eh->GetFd(), eh ) );
98 /* Ohshi-, map::insert failed :/ */
105 bool IOCPEngine::DelFd(EventHandler* eh, bool force /* = false */)
110 int fake_fd = eh->m_internalFd;
111 int fd = eh->GetFd();
116 ServerInstance->Log(DEBUG, "Removing fake fd %u, real fd %u, address 0x%p", fake_fd, eh->GetFd(), eh);
118 /* Cancel pending i/o operations. */
119 if (CancelIo((HANDLE)fd) == FALSE)
122 /* Free the buffer, and delete the event. */
123 if (eh->m_readEvent != 0)
125 if(((Overlapped*)eh->m_readEvent)->m_params != 0)
126 delete ((udp_overlap*)((Overlapped*)eh->m_readEvent)->m_params);
128 delete ((Overlapped*)eh->m_readEvent);
131 if(eh->m_writeEvent != 0)
132 delete ((Overlapped*)eh->m_writeEvent);
134 if(eh->m_acceptEvent != 0)
136 delete ((accept_overlap*)((Overlapped*)eh->m_acceptEvent)->m_params);
137 delete ((Overlapped*)eh->m_acceptEvent);
142 m_binding.erase(eh->GetFd());
144 /* decrement set size */
151 void IOCPEngine::WantWrite(EventHandler* eh)
156 /* Post event - write begin */
157 if(!eh->m_writeEvent)
159 ULONG_PTR completion_key = (ULONG_PTR)eh->m_internalFd;
160 Overlapped * ov = new Overlapped(SOCKET_IO_EVENT_WRITE_READY, 0);
161 eh->m_writeEvent = (void*)ov;
162 PostQueuedCompletionStatus(m_completionPort, 0, completion_key, &ov->m_overlap);
166 bool IOCPEngine::PostCompletionEvent(EventHandler * eh, SocketIOEvent type, int param)
171 Overlapped * ov = new Overlapped(type, param);
172 ULONG_PTR completion_key = (ULONG_PTR)eh->m_internalFd;
173 return PostQueuedCompletionStatus(m_completionPort, 0, completion_key, &ov->m_overlap);
176 void IOCPEngine::PostReadEvent(EventHandler * eh)
181 Overlapped * ov = new Overlapped(SOCKET_IO_EVENT_READ_READY, 0);
186 /* by passing a null buffer pointer, we can have this working in the same way as epoll..
187 * its slower, but it saves modifying all network code.
192 /* determine socket type. */
194 int sock_len = sizeof(DWORD);
195 if(getsockopt(eh->GetFd(), SOL_SOCKET, SO_TYPE, (char*)&sock_type, &sock_len) == -1)
198 PostCompletionEvent(eh, SOCKET_IO_EVENT_ERROR, 0);
204 case SOCK_DGRAM: /* UDP Socket */
206 udp_overlap * uv = new udp_overlap;
207 uv->udp_sockaddr_len = sizeof(sockaddr);
208 buf.buf = (char*)uv->udp_buffer;
209 buf.len = sizeof(uv->udp_buffer);
210 ov->m_params = (unsigned long)uv;
211 if(WSARecvFrom(eh->GetFd(), &buf, 1, &uv->udp_len, &flags, uv->udp_sockaddr, (LPINT)&uv->udp_sockaddr_len, &ov->m_overlap, 0))
213 int err = WSAGetLastError();
214 if(err != WSA_IO_PENDING)
217 PostCompletionEvent(eh, SOCKET_IO_EVENT_ERROR, 0);
224 case SOCK_STREAM: /* TCP Socket */
226 if(WSARecv(eh->GetFd(), &buf, 1, &r_length, &flags, &ov->m_overlap, 0) == SOCKET_ERROR)
228 if(WSAGetLastError() != WSA_IO_PENDING)
231 PostCompletionEvent(eh, SOCKET_IO_EVENT_ERROR, 0);
240 printf("unknwon socket type: %u\n", sock_type);
245 eh->m_readEvent = (void*)ov;
248 int IOCPEngine::DispatchEvents()
251 LPOVERLAPPED overlap;
256 unsigned long bytes_recv;
258 while (GetQueuedCompletionStatus(m_completionPort, &len, &intfd, &overlap, 1000))
260 // woot, we got an event on a socket :P
262 ov = CONTAINING_RECORD(overlap, Overlapped, m_overlap);
269 case SOCKET_IO_EVENT_WRITE_READY:
271 eh->m_writeEvent = 0;
272 eh->HandleEvent(EVENT_WRITE, 0);
276 case SOCKET_IO_EVENT_READ_READY:
280 // if we had params, it means we are a udp socket with a udp_overlap pointer in this long.
281 udp_overlap * uv = (udp_overlap*)ov->m_params;
285 eh->HandleEvent(EVENT_READ, 0);
292 ret = ioctlsocket(eh->GetFd(), FIONREAD, &bytes_recv);
294 if(ret != 0 || bytes_recv == 0)
297 PostCompletionEvent(eh, SOCKET_IO_EVENT_ERROR, EIO); /* Old macdonald had an error, EIEIO. */
301 eh->HandleEvent(EVENT_READ, 0);
308 case SOCKET_IO_EVENT_ACCEPT:
310 /* this is kinda messy.. :/ */
311 eh->HandleEvent(EVENT_READ, ov->m_params);
312 delete ((accept_overlap*)ov->m_params);
313 eh->m_acceptEvent = 0;
318 case SOCKET_IO_EVENT_ERROR:
320 eh->HandleEvent(EVENT_ERROR, ov->m_params);
331 void IOCPEngine::PostAcceptEvent(EventHandler * eh)
336 int fd = WSASocket(AF_INET, SOCK_STREAM, 0, 0, 0, WSA_FLAG_OVERLAPPED);
337 int len = sizeof(sockaddr_in) + 16;
339 accept_overlap* ao = new accept_overlap;
340 memset(ao->buf, 0, 1024);
343 Overlapped* ov = new Overlapped(SOCKET_IO_EVENT_ACCEPT, (int)ao);
344 eh->m_acceptEvent = (void*)ov;
346 if(AcceptEx(eh->GetFd(), fd, ao->buf, 0, len, len, &dwBytes, &ov->m_overlap) == FALSE)
348 int err = WSAGetLastError();
349 if(err != WSA_IO_PENDING)
351 printf("PostAcceptEvent err: %d\n", err);
357 std::string IOCPEngine::GetName()
362 int __accept_socket(SOCKET s, sockaddr * addr, int * addrlen, void * acceptevent)
364 Overlapped* ovl = (Overlapped*)acceptevent;
365 accept_overlap* ov = (accept_overlap*)ovl->m_params;
367 sockaddr_in* server_address = (sockaddr_in*)&ov->buf[10];
368 sockaddr_in* client_address = (sockaddr_in*)&ov->buf[38];
370 memcpy(addr, client_address, sizeof(sockaddr_in));
371 *addrlen = sizeof(sockaddr_in);
376 int __getsockname(SOCKET s, sockaddr * name, int * namelen, void * acceptevent)
378 Overlapped* ovl = (Overlapped*)acceptevent;
379 accept_overlap* ov = (accept_overlap*)ovl->m_params;
381 sockaddr_in* server_address = (sockaddr_in*)&ov->buf[10];
382 sockaddr_in* client_address = (sockaddr_in*)&ov->buf[38];
384 memcpy(name, server_address, sizeof(sockaddr_in));
385 *namelen = sizeof(sockaddr_in);
390 int __recvfrom(SOCKET s, char * buf, int len, int flags, struct sockaddr * from, int * fromlen, udp_overlap * ov)
392 memcpy(buf, ov->udp_buffer, ov->udp_len);
393 memcpy(from, ov->udp_sockaddr, *fromlen);
397 EventHandler * IOCPEngine::GetRef(int fd)
399 map<int, EventHandler*>::iterator itr = m_binding.find(fd);
400 return (itr == m_binding.end()) ? 0 : itr->second;
403 bool IOCPEngine::HasFd(int fd)
405 return (GetRef(fd) != 0);
408 EventHandler * IOCPEngine::GetIntRef(int fd)
410 if(fd < 0 || fd > MAX_DESCRIPTORS)