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 ServerInstance->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 = new int(GenerateFd(eh->GetFd()));
51 int opt_len = sizeof(int);
54 if ((*fake_fd < 0) || (*fake_fd > MAX_DESCRIPTORS))
57 /* Already an entry here */
64 /* are we a listen socket? */
65 getsockopt(eh->GetFd(), SOL_SOCKET, SO_ACCEPTCONN, (char*)&is_accept, &opt_len);
67 /* set up the read event so the socket can actually receive data :P */
68 eh->Extend("internal_fd", fake_fd);
70 unsigned long completion_key = (ULONG_PTR)*fake_fd;
71 /* assign the socket to the completion port */
72 if (!CreateIoCompletionPort((HANDLE)eh->GetFd(), m_completionPort, completion_key, 0))
75 /* set up binding, increase set size */
79 /* setup initial events */
86 ServerInstance->Log(DEBUG, "New fake fd: %u, real fd: %u, address 0x%p", *fake_fd, eh->GetFd(), eh);
88 /* post a write event if there is data to be written */
92 /* we're all good =) */
95 m_binding.insert( map<int, EventHandler*>::value_type( eh->GetFd(), eh ) );
99 /* Ohshi-, map::insert failed :/ */
106 bool IOCPEngine::DelFd(EventHandler* eh, bool force /* = false */)
113 if (!eh->GetExt("internal_fd", fake_fd))
116 int fd = eh->GetFd();
121 void* m_readEvent = NULL;
122 void* m_writeEvent = NULL;
123 void* m_acceptEvent = NULL;
125 ServerInstance->Log(DEBUG, "Removing fake fd %u, real fd %u, address 0x%p", *fake_fd, eh->GetFd(), eh);
127 /* Cancel pending i/o operations. */
128 if (CancelIo((HANDLE)fd) == FALSE)
131 /* Free the buffer, and delete the event. */
132 if (eh->GetExt("windows_readevent", m_readEvent))
134 if(((Overlapped*)m_readEvent)->m_params != 0)
135 delete ((udp_overlap*)((Overlapped*)m_readEvent)->m_params);
137 delete ((Overlapped*)m_readEvent);
138 eh->Shrink("windows_readevent");
141 if(eh->GetExt("windows_writeevent", m_writeEvent))
143 delete ((Overlapped*)m_writeEvent);
144 eh->Shrink("windows_writeevent");
147 if(eh->GetExt("windows_acceptevent", m_acceptEvent))
149 delete ((accept_overlap*)((Overlapped*)m_acceptEvent)->m_params);
150 delete ((Overlapped*)m_acceptEvent);
151 eh->Shrink("windows_accepevent");
156 m_binding.erase(eh->GetFd());
159 eh->Shrink("internal_fd");
161 /* decrement set size */
168 void IOCPEngine::WantWrite(EventHandler* eh)
173 void* m_writeEvent = NULL;
176 if (!eh->GetExt("internal_fd", fake_fd))
179 /* Post event - write begin */
180 if(!eh->GetExt("windows_writeevent", m_writeEvent))
182 ULONG_PTR completion_key = (ULONG_PTR)*fake_fd;
183 Overlapped * ov = new Overlapped(SOCKET_IO_EVENT_WRITE_READY, 0);
184 eh->Shrink("windows_writeevent");
185 eh->Extend("windows_writeevent",ov);
186 PostQueuedCompletionStatus(m_completionPort, 0, completion_key, &ov->m_overlap);
190 bool IOCPEngine::PostCompletionEvent(EventHandler * eh, SocketIOEvent type, int param)
196 if (!eh->GetExt("internal_fd", fake_fd))
199 Overlapped * ov = new Overlapped(type, param);
200 ULONG_PTR completion_key = (ULONG_PTR)*fake_fd;
201 return PostQueuedCompletionStatus(m_completionPort, 0, completion_key, &ov->m_overlap);
204 void IOCPEngine::PostReadEvent(EventHandler * eh)
209 Overlapped * ov = new Overlapped(SOCKET_IO_EVENT_READ_READY, 0);
214 /* by passing a null buffer pointer, we can have this working in the same way as epoll..
215 * its slower, but it saves modifying all network code.
220 /* determine socket type. */
222 int sock_len = sizeof(DWORD);
223 if(getsockopt(eh->GetFd(), SOL_SOCKET, SO_TYPE, (char*)&sock_type, &sock_len) == -1)
226 PostCompletionEvent(eh, SOCKET_IO_EVENT_ERROR, 0);
232 case SOCK_DGRAM: /* UDP Socket */
234 udp_overlap * uv = new udp_overlap;
235 uv->udp_sockaddr_len = sizeof(sockaddr);
236 buf.buf = (char*)uv->udp_buffer;
237 buf.len = sizeof(uv->udp_buffer);
238 ov->m_params = (unsigned long)uv;
239 if(WSARecvFrom(eh->GetFd(), &buf, 1, &uv->udp_len, &flags, uv->udp_sockaddr, (LPINT)&uv->udp_sockaddr_len, &ov->m_overlap, 0))
241 int err = WSAGetLastError();
242 if(err != WSA_IO_PENDING)
245 PostCompletionEvent(eh, SOCKET_IO_EVENT_ERROR, 0);
252 case SOCK_STREAM: /* TCP Socket */
254 if(WSARecv(eh->GetFd(), &buf, 1, &r_length, &flags, &ov->m_overlap, 0) == SOCKET_ERROR)
256 if(WSAGetLastError() != WSA_IO_PENDING)
259 PostCompletionEvent(eh, SOCKET_IO_EVENT_ERROR, 0);
268 printf("unknwon socket type: %u\n", sock_type);
273 eh->Extend("windows_readevent", ov);
276 int IOCPEngine::DispatchEvents()
279 LPOVERLAPPED overlap;
284 unsigned long bytes_recv;
286 while (GetQueuedCompletionStatus(m_completionPort, &len, &intfd, &overlap, 1000))
288 if (intfd < 0 || intfd > MAX_DESCRIPTORS)
291 // woot, we got an event on a socket :P
293 ov = CONTAINING_RECORD(overlap, Overlapped, m_overlap);
298 void* m_readEvent = NULL;
299 void* m_writeEvent = NULL;
301 eh->GetExt("windows_readevent", m_readEvent);
302 eh->GetExt("windows_writeevent", m_writeEvent);
306 case SOCKET_IO_EVENT_WRITE_READY:
308 eh->Shrink("windows_writeevent");
309 eh->HandleEvent(EVENT_WRITE, 0);
313 case SOCKET_IO_EVENT_READ_READY:
317 // if we had params, it means we are a udp socket with a udp_overlap pointer in this long.
318 udp_overlap * uv = (udp_overlap*)ov->m_params;
321 eh->Shrink("windows_readevent");
322 eh->HandleEvent(EVENT_READ, 0);
329 ret = ioctlsocket(eh->GetFd(), FIONREAD, &bytes_recv);
330 eh->Shrink("windows_readevent");
331 if(ret != 0 || bytes_recv == 0)
334 PostCompletionEvent(eh, SOCKET_IO_EVENT_ERROR, EIO); /* Old macdonald had an error, EIEIO. */
338 eh->HandleEvent(EVENT_READ, 0);
345 case SOCKET_IO_EVENT_ACCEPT:
347 /* this is kinda messy.. :/ */
348 eh->HandleEvent(EVENT_READ, ov->m_params);
349 delete ((accept_overlap*)ov->m_params);
350 eh->Shrink("windows_acceptevent");
355 case SOCKET_IO_EVENT_ERROR:
357 eh->HandleEvent(EVENT_ERROR, ov->m_params);
368 void IOCPEngine::PostAcceptEvent(EventHandler * eh)
375 struct linger linger = { 0 };
377 int fd = WSASocket(AF_INET, SOCK_STREAM, 0, 0, 0, WSA_FLAG_OVERLAPPED);
379 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (char*)&on, sizeof(on));
380 /* This is BSD compatible, setting l_onoff to 0 is *NOT* http://web.irc.org/mla/ircd-dev/msg02259.html */
383 setsockopt(fd, SOL_SOCKET, SO_LINGER, (char*)&linger,sizeof(linger));
384 ioctlsocket(fd, FIONBIO, &arg);
386 int len = sizeof(sockaddr_in) + 16;
388 accept_overlap* ao = new accept_overlap;
389 memset(ao->buf, 0, 1024);
392 Overlapped* ov = new Overlapped(SOCKET_IO_EVENT_ACCEPT, (int)ao);
393 eh->Extend("windows_acceptevent", ov);
395 if(AcceptEx(eh->GetFd(), fd, ao->buf, 0, len, len, &dwBytes, &ov->m_overlap) == FALSE)
397 int err = WSAGetLastError();
398 if(err != WSA_IO_PENDING)
400 printf("PostAcceptEvent err: %d\n", err);
406 std::string IOCPEngine::GetName()
411 int __accept_socket(SOCKET s, sockaddr * addr, int * addrlen, void * acceptevent)
413 Overlapped* ovl = (Overlapped*)acceptevent;
414 accept_overlap* ov = (accept_overlap*)ovl->m_params;
416 sockaddr_in* server_address = (sockaddr_in*)&ov->buf[10];
417 sockaddr_in* client_address = (sockaddr_in*)&ov->buf[38];
419 memcpy(addr, client_address, sizeof(sockaddr_in));
420 *addrlen = sizeof(sockaddr_in);
425 int __getsockname(SOCKET s, sockaddr * name, int * namelen, void * acceptevent)
427 Overlapped* ovl = (Overlapped*)acceptevent;
428 accept_overlap* ov = (accept_overlap*)ovl->m_params;
430 sockaddr_in* server_address = (sockaddr_in*)&ov->buf[10];
431 sockaddr_in* client_address = (sockaddr_in*)&ov->buf[38];
433 memcpy(name, server_address, sizeof(sockaddr_in));
434 *namelen = sizeof(sockaddr_in);
439 int __recvfrom(SOCKET s, char * buf, int len, int flags, struct sockaddr * from, int * fromlen, udp_overlap * ov)
441 memcpy(buf, ov->udp_buffer, ov->udp_len);
442 memcpy(from, ov->udp_sockaddr, *fromlen);
446 EventHandler * IOCPEngine::GetRef(int fd)
448 map<int, EventHandler*>::iterator itr = m_binding.find(fd);
449 return (itr == m_binding.end()) ? 0 : itr->second;
452 bool IOCPEngine::HasFd(int fd)
454 return (GetRef(fd) != 0);
457 bool IOCPEngine::BoundsCheckFd(EventHandler* eh)
462 if (!eh->GetExt("internal_fd", fake_fd))
464 if ((*fake_fd < 0) || (*fake_fd > MAX_DESCRIPTORS))
466 if ((eh->GetFd() < 0) || (eh->GetFd() > MAX_DESCRIPTORS))
471 EventHandler * IOCPEngine::GetIntRef(int fd)
473 if(fd < 0 || fd > MAX_DESCRIPTORS)