-/* +------------------------------------+
- * | Inspire Internet Relay Chat Daemon |
- * +------------------------------------+
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
*
- * Inspire is copyright (C) 2002-2005 ChatSpike-Dev.
- * E-mail:
- * <brain@chatspike.net>
- * <Craig@chatspike.net>
+ * Copyright (C) 2013-2016 Attila Molnar <attilamolnar@hush.com>
+ * Copyright (C) 2013-2014 Adam <Adam@anope.org>
+ * Copyright (C) 2012-2013, 2017-2020 Sadie Powell <sadie@witchery.services>
+ * Copyright (C) 2012 Robby <robby@chatbelgie.be>
+ * Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
+ * Copyright (C) 2009 Uli Schlachter <psychon@inspircd.org>
+ * Copyright (C) 2007-2008, 2017 Robin Burchell <robin+git@viroteck.net>
+ * Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
+ * Copyright (C) 2005-2008 Craig Edwards <brain@inspircd.org>
*
- * Written by Craig Edwards, Craig McLure, and others.
- * 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/>.
+ */
+
-#ifndef __SOCKETENGINE__
-#define __SOCKETENGINE__
+#pragma once
-#include <vector>
#include <string>
+#include "socket.h"
+#include "base.h"
+
+#ifndef _WIN32
+#include <sys/uio.h>
+#endif
+
+#ifndef IOV_MAX
+#define IOV_MAX 1024
+#endif
+
+/**
+ * Event mask for SocketEngine events
+ */
+enum EventMask
+{
+ /** Do not test this socket for readability
+ */
+ FD_WANT_NO_READ = 0x1,
+ /** Give a read event at all times when reads will not block.
+ */
+ FD_WANT_POLL_READ = 0x2,
+ /** Give a read event when there is new data to read.
+ *
+ * An event MUST be sent if there is new data to be read, and the most
+ * recent read/recv() on this FD returned EAGAIN. An event MAY be sent
+ * at any time there is data to be read on the socket.
+ */
+ FD_WANT_FAST_READ = 0x4,
+ /** Give an optional read event when reads begin to unblock
+ *
+ * This state is useful if you want to leave data in the OS receive
+ * queue but not get continuous event notifications about it, because
+ * it may not require a system call to transition from FD_WANT_FAST_READ
+ */
+ FD_WANT_EDGE_READ = 0x8,
+
+ /** Mask for all read events */
+ FD_WANT_READ_MASK = 0x0F,
+
+ /** Do not test this socket for writeability
+ */
+ FD_WANT_NO_WRITE = 0x10,
+ /** Give a write event at all times when writes will not block.
+ *
+ * You probably shouldn't use this state; if it's likely that the write
+ * will not block, try it first, then use FD_WANT_FAST_WRITE if it
+ * fails. If it's likely to block (or you are using polling-style reads)
+ * then use FD_WANT_SINGLE_WRITE.
+ */
+ FD_WANT_POLL_WRITE = 0x20,
+ /** Give a write event when writes don't block any more
+ *
+ * An event MUST be sent if writes will not block, and the most recent
+ * write/send() on this FD returned EAGAIN, or connect() returned
+ * EINPROGRESS. An event MAY be sent at any time that writes will not
+ * block.
+ *
+ * Before calling OnEventHandler*(), a socket engine MAY change the state of
+ * the FD back to FD_WANT_EDGE_WRITE if it is simpler (for example, if a
+ * one-shot notification was registered). If further writes are needed,
+ * it is the responsibility of the event handler to change the state to
+ * one that will generate the required notifications
+ */
+ FD_WANT_FAST_WRITE = 0x40,
+ /** Give an optional write event on edge-triggered write unblock.
+ *
+ * This state is useful to avoid system calls when moving to/from
+ * FD_WANT_FAST_WRITE when writing data to a mostly-unblocked socket.
+ */
+ FD_WANT_EDGE_WRITE = 0x80,
+ /** Request a one-shot poll-style write notification. The socket will
+ * return to the FD_WANT_NO_WRITE state before OnEventHandler*() is called.
+ */
+ FD_WANT_SINGLE_WRITE = 0x100,
+
+ /** Mask for all write events */
+ FD_WANT_WRITE_MASK = 0x1F0,
+
+ /** Add a trial read. During the next DispatchEvents invocation, this
+ * will call OnEventHandlerRead() unless reads are known to be
+ * blocking.
+ */
+ FD_ADD_TRIAL_READ = 0x1000,
+ /** Assert that reads are known to block. This cancels FD_ADD_TRIAL_READ.
+ * Reset by SE before running OnEventHandlerRead().
+ */
+ FD_READ_WILL_BLOCK = 0x2000,
+
+ /** Add a trial write. During the next DispatchEvents invocation, this
+ * will call OnEventHandlerWrite() unless writes are known to be
+ * blocking.
+ *
+ * This could be used to group several writes together into a single
+ * send() syscall, or to ensure that writes are blocking when attempting
+ * to use FD_WANT_FAST_WRITE.
+ */
+ FD_ADD_TRIAL_WRITE = 0x4000,
+ /** Assert that writes are known to block. This cancels FD_ADD_TRIAL_WRITE.
+ * Reset by SE before running OnEventHandlerWrite().
+ */
+ FD_WRITE_WILL_BLOCK = 0x8000,
+
+ /** Mask for trial read/trial write */
+ FD_TRIAL_NOTE_MASK = 0x5000
+};
-class SocketEngine {
+/** This class is a basic I/O handler class.
+ * Any object which wishes to receive basic I/O events
+ * from the socketengine must derive from this class and
+ * implement the OnEventHandler*() methods. The derived class
+ * must then be added to SocketEngine using the method
+ * SocketEngine::AddFd(), after which point the derived
+ * class will receive events to its OnEventHandler*() methods.
+ * The event mask passed to SocketEngine::AddFd() determines
+ * what events the EventHandler gets notified about and with
+ * what semantics. SocketEngine::ChangeEventMask() can be
+ * called to update the event mask later. The only
+ * requirement beyond this for an event handler is that it
+ * must have a file descriptor. What this file descriptor
+ * is actually attached to is completely up to you.
+ */
+class CoreExport EventHandler : public classbase
+{
+ private:
+ /** Private state maintained by socket engine */
+ int event_mask;
+
+ void SetEventMask(int mask) { event_mask = mask; }
+
+ protected:
+ /** File descriptor.
+ * All events which can be handled must have a file descriptor. This
+ * allows you to add events for sockets, fifo's, pipes, and various
+ * other forms of IPC. Do not change this while the object is
+ * registered with the SocketEngine
+ */
+ int fd;
+
+ /** Swaps the internals of this EventHandler with another one.
+ * @param other A EventHandler to swap internals with.
+ */
+ void SwapInternals(EventHandler& other);
+
+ public:
+ /** Get the current file descriptor
+ * @return The file descriptor of this handler
+ */
+ inline int GetFd() const { return fd; }
+
+ /** Checks if this event handler has a fd associated with it. */
+ inline bool HasFd() const { return fd >= 0; }
+
+ inline int GetEventMask() const { return event_mask; }
+
+ /** Set a new file descriptor
+ * @param FD The new file descriptor. Do not call this method without
+ * first deleting the object from the SocketEngine if you have
+ * added it to a SocketEngine instance.
+ */
+ void SetFd(int FD);
+
+ /** Constructor
+ */
+ EventHandler();
+
+ /** Destructor
+ */
+ virtual ~EventHandler() {}
+
+ /** Called by the socket engine in case of a read event
+ */
+ virtual void OnEventHandlerRead() = 0;
+
+ /** Called by the socket engine in case of a write event.
+ * The default implementation does nothing.
+ */
+ virtual void OnEventHandlerWrite();
+
+ /** Called by the socket engine in case of an error event.
+ * The default implementation does nothing.
+ * @param errornum Error code
+ */
+ virtual void OnEventHandlerError(int errornum);
+
+ friend class SocketEngine;
+};
- std::vector<int> fds;
- int EngineHandle;
-#ifdef USE_SELECT
- fd_set wfdset, rfdset;
-#endif
-#ifdef USE_KQUEUE
- struct kevent ke_list[65535];
- struct timespec ts;
-#endif
-#ifdef USE_EPOLL
- struct epoll_event events[65535];
-#endif
+/** Provides basic file-descriptor-based I/O support.
+ * The actual socketengine class presents the
+ * same interface on all operating systems, but
+ * its private members and internal behaviour
+ * should be treated as blackboxed, and vary
+ * from system to system and upon the config
+ * settings chosen by the server admin.
+ */
+class CoreExport SocketEngine
+{
+ public:
+ /** Socket engine statistics: count of various events, bandwidth usage
+ */
+ class Statistics
+ {
+ mutable size_t indata;
+ mutable size_t outdata;
+ mutable time_t lastempty;
+
+ /** Reset the byte counters and lastempty if there wasn't a reset in this second.
+ */
+ void CheckFlush() const;
+
+ public:
+ /** Constructor, initializes member vars except indata and outdata because those are set to 0
+ * in CheckFlush() the first time Update() or GetBandwidth() is called.
+ */
+ Statistics() : lastempty(0), TotalEvents(0), ReadEvents(0), WriteEvents(0), ErrorEvents(0) { }
+
+ /** Update counters for network data received.
+ * This should be called after every read-type syscall.
+ * @param len_in Number of bytes received, or -1 for error, as typically
+ * returned by a read-style syscall.
+ */
+ void UpdateReadCounters(int len_in);
+
+ /** Update counters for network data sent.
+ * This should be called after every write-type syscall.
+ * @param len_out Number of bytes sent, or -1 for error, as typically
+ * returned by a read-style syscall.
+ */
+ void UpdateWriteCounters(int len_out);
+
+ /** Get data transfer statistics.
+ * @param kbitpersec_in Filled with incoming traffic in this second in kbit/s.
+ * @param kbitpersec_out Filled with outgoing traffic in this second in kbit/s.
+ * @param kbitpersec_total Filled with total traffic in this second in kbit/s.
+ */
+ void CoreExport GetBandwidth(float& kbitpersec_in, float& kbitpersec_out, float& kbitpersec_total) const;
+
+ unsigned long TotalEvents;
+ unsigned long ReadEvents;
+ unsigned long WriteEvents;
+ unsigned long ErrorEvents;
+ };
+
+ private:
+ /** Reference table, contains all current handlers
+ **/
+ static std::vector<EventHandler*> ref;
+
+ /** Current number of descriptors in the engine. */
+ static size_t CurrentSetSize;
+
+ /** The maximum number of descriptors in the engine. */
+ static size_t MaxSetSize;
+
+ /** List of handlers that want a trial read/write
+ */
+ static std::set<int> trials;
+
+ /** Socket engine statistics: count of various events, bandwidth usage
+ */
+ static Statistics stats;
+
+ /** Look up the fd limit using rlimit. */
+ static void LookupMaxFds();
+
+ /** Terminates the program when the socket engine fails to initialize. */
+ static void InitError();
+
+ static void OnSetEvent(EventHandler* eh, int old_mask, int new_mask);
+
+ /** Add an event handler to the base socket engine. AddFd(EventHandler*, int) should call this.
+ */
+ static bool AddFdRef(EventHandler* eh);
+
+ static void DelFdRef(EventHandler* eh);
+
+ template <typename T>
+ static void ResizeDouble(std::vector<T>& vect)
+ {
+ if (SocketEngine::CurrentSetSize > vect.size())
+ vect.resize(SocketEngine::CurrentSetSize * 2);
+ }
public:
-
- SocketEngine();
- ~SocketEngine();
- bool AddFd(int fd, bool readable, bool writeable, char type);
- bool DelFd(int fd);
- bool Wait(unsigned long millisecs, std::vector<int> &fdlist);
- std::string GetName();
+#ifndef _WIN32
+ typedef iovec IOVector;
+#else
+ typedef WindowsIOVec IOVector;
+#endif
+
+ /** Constructor.
+ * The constructor transparently initializes
+ * the socket engine which the ircd is using.
+ * Please note that if there is a catastrophic
+ * failure (for example, you try and enable
+ * epoll on a 2.4 linux kernel) then this
+ * function may bail back to the shell.
+ * @return void, but it is acceptable for this function to bail back to
+ * the shell or operating system on fatal error.
+ */
+ static void Init();
+
+ /** Destructor.
+ * The destructor transparently tidies up
+ * any resources used by the socket engine.
+ */
+ static void Deinit();
+
+ /** Add an EventHandler object to the engine. Use AddFd to add a file
+ * descriptor to the engine and have the socket engine monitor it. You
+ * must provide an object derived from EventHandler which implements
+ * the required OnEventHandler*() methods.
+ * @param eh An event handling object to add
+ * @param event_mask The initial event mask for the object
+ */
+ static bool AddFd(EventHandler* eh, int event_mask);
+
+ /** If you call this function and pass it an
+ * event handler, that event handler will
+ * receive the next available write event,
+ * even if the socket is a readable socket only.
+ * Developers should avoid constantly keeping
+ * an eventhandler in the writeable state,
+ * as this will consume large amounts of
+ * CPU time.
+ * @param eh The event handler to change
+ * @param event_mask The changes to make to the wait state
+ */
+ static void ChangeEventMask(EventHandler* eh, int event_mask);
+
+ /** Returns the number of file descriptors reported by the system this program may use
+ * when it was started.
+ * @return If non-zero the number of file descriptors that the system reported that we
+ * may use.
+ */
+ static size_t GetMaxFds() { return MaxSetSize; }
+
+ /** Returns the number of file descriptors being queried
+ * @return The set size
+ */
+ static size_t GetUsedFds() { return CurrentSetSize; }
+
+ /** Delete an event handler from the engine.
+ * This function call deletes an EventHandler
+ * from the engine, returning true if it succeeded
+ * and false if it failed. This does not free the
+ * EventHandler pointer using delete, if this is
+ * required you must do this yourself.
+ * @param eh The event handler object to remove
+ */
+ static void DelFd(EventHandler* eh);
+
+ /** Returns true if a file descriptor exists in
+ * the socket engine's list.
+ * @param fd The event handler to look for
+ * @return True if this fd has an event handler
+ */
+ static bool HasFd(int fd);
+
+ /** Returns the EventHandler attached to a specific fd.
+ * If the fd isn't in the socketengine, returns NULL.
+ * @param fd The event handler to look for
+ * @return A pointer to the event handler, or NULL
+ */
+ static EventHandler* GetRef(int fd);
+
+ /** Waits for events and dispatches them to handlers. Please note that
+ * this doesn't wait long, only a couple of milliseconds. It returns the
+ * number of events which occurred during this call. This method will
+ * dispatch events to their handlers by calling their
+ * EventHandler::OnEventHandler*() methods.
+ * @return The number of events which have occurred.
+ */
+ static int DispatchEvents();
+
+ /** Dispatch trial reads and writes. This causes the actual socket I/O
+ * to happen when writes have been pre-buffered.
+ */
+ static void DispatchTrialWrites();
+
+ /** Returns true if the file descriptors in the given event handler are
+ * within sensible ranges which can be handled by the socket engine.
+ */
+ static bool BoundsCheckFd(EventHandler* eh);
+
+ /** Abstraction for BSD sockets accept(2).
+ * This function should emulate its namesake system call exactly.
+ * @param fd This version of the call takes an EventHandler instead of a bare file descriptor.
+ * @param addr The client IP address and port
+ * @param addrlen The size of the sockaddr parameter.
+ * @return This method should return exactly the same values as the system call it emulates.
+ */
+ static int Accept(EventHandler* fd, sockaddr *addr, socklen_t *addrlen);
+
+ /** Close the underlying fd of an event handler, remove it from the socket engine and set the fd to -1.
+ * @param eh The EventHandler to close.
+ * @return 0 on success, a negative value on error
+ */
+ static int Close(EventHandler* eh);
+
+ /** Abstraction for BSD sockets close(2).
+ * This function should emulate its namesake system call exactly.
+ * This function should emulate its namesake system call exactly.
+ * @return This method should return exactly the same values as the system call it emulates.
+ */
+ static int Close(int fd);
+
+ /** Abstraction for BSD sockets send(2).
+ * This function should emulate its namesake system call exactly.
+ * @param fd This version of the call takes an EventHandler instead of a bare file descriptor.
+ * @param buf The buffer in which the data that is sent is stored.
+ * @param len The size of the buffer.
+ * @param flags A flag value that controls the sending of the data.
+ * @return This method should return exactly the same values as the system call it emulates.
+ */
+ static int Send(EventHandler* fd, const void *buf, size_t len, int flags);
+
+ /** Abstraction for vector write function writev().
+ * This function should emulate its namesake system call exactly.
+ * @param fd EventHandler to send data with
+ * @param iov Array of IOVectors containing the buffers to send and their lengths in the platform's
+ * native format.
+ * @param count Number of elements in iov.
+ * @return This method should return exactly the same values as the system call it emulates.
+ */
+ static int WriteV(EventHandler* fd, const IOVector* iov, int count);
+
+#ifdef _WIN32
+ /** Abstraction for vector write function writev() that accepts a POSIX format iovec.
+ * This function should emulate its namesake system call exactly.
+ * @param fd EventHandler to send data with
+ * @param iov Array of iovecs containing the buffers to send and their lengths in POSIX format.
+ * @param count Number of elements in iov.
+ * @return This method should return exactly the same values as the system call it emulates.
+ */
+ static int WriteV(EventHandler* fd, const iovec* iov, int count);
+#endif
+
+ /** Abstraction for BSD sockets recv(2).
+ * This function should emulate its namesake system call exactly.
+ * @param fd This version of the call takes an EventHandler instead of a bare file descriptor.
+ * @param buf The buffer in which the data that is read is stored.
+ * @param len The size of the buffer.
+ * @param flags A flag value that controls the reception of the data.
+ * @return This method should return exactly the same values as the system call it emulates.
+ */
+ static int Recv(EventHandler* fd, void *buf, size_t len, int flags);
+
+ /** Abstraction for BSD sockets recvfrom(2).
+ * This function should emulate its namesake system call exactly.
+ * @param fd This version of the call takes an EventHandler instead of a bare file descriptor.
+ * @param buf The buffer in which the data that is read is stored.
+ * @param len The size of the buffer.
+ * @param flags A flag value that controls the reception of the data.
+ * @param from The remote IP address and port.
+ * @param fromlen The size of the from parameter.
+ * @return This method should return exactly the same values as the system call it emulates.
+ */
+ static int RecvFrom(EventHandler* fd, void *buf, size_t len, int flags, sockaddr *from, socklen_t *fromlen);
+
+ /** Abstraction for BSD sockets sendto(2).
+ * This function should emulate its namesake system call exactly.
+ * @param fd This version of the call takes an EventHandler instead of a bare file descriptor.
+ * @param buf The buffer in which the data that is sent is stored.
+ * @param len The size of the buffer.
+ * @param flags A flag value that controls the sending of the data.
+ * @param address The remote IP address and port.
+ * @return This method should return exactly the same values as the system call it emulates.
+ */
+ static int SendTo(EventHandler* fd, const void* buf, size_t len, int flags, const irc::sockets::sockaddrs& address);
+
+ /** Abstraction for BSD sockets connect(2).
+ * This function should emulate its namesake system call exactly.
+ * @param fd This version of the call takes an EventHandler instead of a bare file descriptor.
+ * @param address The server IP address and port.
+ * @return This method should return exactly the same values as the system call it emulates.
+ */
+ static int Connect(EventHandler* fd, const irc::sockets::sockaddrs& address);
+
+ /** Make a file descriptor blocking.
+ * @param fd a file descriptor to set to blocking mode
+ * @return 0 on success, -1 on failure, errno is set appropriately.
+ */
+ static int Blocking(int fd);
+
+ /** Make a file descriptor nonblocking.
+ * @param fd A file descriptor to set to nonblocking mode
+ * @return 0 on success, -1 on failure, errno is set appropriately.
+ */
+ static int NonBlocking(int fd);
+
+ /** Abstraction for BSD sockets shutdown(2).
+ * This function should emulate its namesake system call exactly.
+ * @param fd This version of the call takes an EventHandler instead of a bare file descriptor.
+ * @param how What part of the socket to shut down
+ * @return This method should return exactly the same values as the system call it emulates.
+ */
+ static int Shutdown(EventHandler* fd, int how);
+
+ /** Abstraction for BSD sockets shutdown(2).
+ * This function should emulate its namesake system call exactly.
+ * @return This method should return exactly the same values as the system call it emulates.
+ */
+ static int Shutdown(int fd, int how);
+
+ /** Abstraction for BSD sockets bind(2).
+ * This function should emulate its namesake system call exactly.
+ * @return This method should return exactly the same values as the system call it emulates.
+ */
+ static int Bind(int fd, const irc::sockets::sockaddrs& addr);
+
+ /** Abstraction for BSD sockets listen(2).
+ * This function should emulate its namesake system call exactly.
+ * @return This method should return exactly the same values as the system call it emulates.
+ */
+ static int Listen(int sockfd, int backlog);
+
+ /** Set SO_REUSEADDR and SO_LINGER on this file descriptor
+ */
+ static void SetReuse(int sockfd);
+
+ /** This function is called immediately after fork().
+ * Some socket engines (notably kqueue) cannot have their
+ * handles inherited by forked processes. This method
+ * allows for the socket engine to re-create its handle
+ * after the daemon forks as the socket engine is created
+ * long BEFORE the daemon forks.
+ * @return void, but it is acceptable for this function to bail back to
+ * the shell or operating system on fatal error.
+ */
+ static void RecoverFromFork();
+
+ /** Get data transfer and event statistics
+ */
+ static const Statistics& GetStats() { return stats; }
+
+ /** Should we ignore the error in errno?
+ * Checks EAGAIN and WSAEWOULDBLOCK
+ */
+ static bool IgnoreError();
+
+ /** Return the last socket related error. strrerror(errno) on *nix
+ */
+ static std::string LastError();
+
+ /** Returns the error for the given error num, strerror(errnum) on *nix
+ */
+ static std::string GetError(int errnum);
};
+inline bool SocketEngine::IgnoreError()
+{
+ if ((errno == EAGAIN) || (errno == EWOULDBLOCK))
+ return true;
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-// Fill the engine with client file descriptors pending an action
-
-#define epoll_fill int i = epoll_wait(ep, event, 1, 5); \
- if (i > 0) \
- { \
- log(DEBUG,"epoll_wait call: ep=%d, i=%d",ep,i); \
- userrec* cu = fd_ref_table[event[0].data.fd];
-
-#define kqueue_fill ts.tv_sec = 0; \
- ts.tv_nsec = 1000L; \
- int i = kevent(kq, NULL, 0, &ke, 1, &ts); \
- if (i > 0) \
- { \
- log(DEBUG,"kevent call: kq=%d, i=%d",kq,i); \
- userrec* cu = fd_ref_table[ke.ident];
-
-#define select_fill tval.tv_sec = 0; \
- tval.tv_usec = 1000L; \
- selectResult2 = select(FD_SETSIZE, &sfd, NULL, NULL, &tval); \
- if ((selectResult2 > 0) && (xcount != clientlist.end())) \
- for (user_hash::iterator count2a = xcount; count2a != endingiter; count2a++) \
- { \
- if (count2a == clientlist.end()) \
- break; \
- userrec* cu = count2a->second;
-
-#ifdef USE_EPOLL
-#define engine_fill epoll_fill
-#endif
-#ifdef USE_KQUEUE
-#define engine_fill kqueue_fill
-#endif
-#ifdef USE_SELECT
-#define engine_fill select_fill
-#endif
-
-// how to determine if a socket needs attention if further checks are needed
-
-#define epoll_check ((cu->fd != FD_MAGIC_NUMBER) && (cu->fd != -1))
-
-#define kqueue_check ((cu->fd != FD_MAGIC_NUMBER) && (cu->fd != -1))
-
-#define select_check ((cu->fd != FD_MAGIC_NUMBER) && (cu->fd != -1) && (FD_ISSET (cu->fd, &sfd)))
-
-#ifdef USE_EPOLL
-#define engine_check epoll_check
-#endif
-#ifdef USE_KQUEUE
-#define engine_check kqueue_check
+#ifdef _WIN32
+ if (WSAGetLastError() == WSAEWOULDBLOCK)
+ return true;
#endif
-#ifdef USE_SELECT
-#define engine_check select_check
-#endif
-
-// how to clean up an exiting client
-
-#define epoll_cleanup log(DEBUG,"InspIRCd: Exited: %s",cu->nick); \
- kill_link(cu,"Client exited"); \
- log(DEBUG,"Bailing from client exit"); \
- goto label;
-#define kqueue_cleanup log(DEBUG,"InspIRCd: Exited: %s",cu->nick); \
- kill_link(cu,"Client exited"); \
- log(DEBUG,"Bailing from client exit"); \
- goto label;
-
-#define select_cleanup if (count2->second) \
- { \
- log(DEBUG,"InspIRCd: Exited: %s",cu->nick); \
- kill_link(cu,"Client exited"); \
- log(DEBUG,"Bailing from client exit"); \
- goto label; \
- }
-
-#ifdef USE_EPOLL
-#define engine_cleanup epoll_cleanup
-#endif
-#ifdef USE_KQUEUE
-#define engine_cleanup kqueue_cleanup
-#endif
-#ifdef USE_SELECT
-#define engine_cleanup select_cleanup
-#endif
-
-
-// how to scan the set for fd's requiring action
-
-#define select_scanset for (count = 0; count < boundPortCount; count++) \
- { \
- FD_SET (openSockfd[count], &selectFds); \
- } \
- tv.tv_usec = 30000L; \
- selectResult = select(MAXSOCKS, &selectFds, NULL, NULL, &tv); \
- if (selectResult > 0) \
- { \
- for (count = 0; count < boundPortCount; count++) \
- { \
- if (FD_ISSET (openSockfd[count], &selectFds)) \
- {
-
-#define kqueue_scanset ts.tv_sec = 0; \
- ts.tv_nsec = 30000L; \
- i = kevent(lkq, NULL, 0, ke_list, 32, &ts); \
- if (i > 0) for (j = 0; j < i; j++) \
- { \
- log(DEBUG,"kqueue: Listening socket event, i=%d, ke.ident=%d",i,ke_list[j].ident); \
- for (count = 0; count < boundPortCount; count++) \
- { \
- if ((unsigned)ke_list[j].ident == (unsigned)openSockfd[count]) \
- {
-
-#define epoll_scanset i = epoll_wait(lep, event, 32, EP_DELAY); \
- if (i > 0) for (j = 0; j < i; j++) \
- { \
- log(DEBUG,"epoll: Listening socket event, i=%d,events[j].data.fd=%d",i,event[j].data.fd); \
- for (count = 0; count < boundPortCount; count++) \
- { \
- if ((unsigned)event[j].data.fd == (unsigned)openSockfd[count]) \
- {
-
-#ifdef USE_EPOLL
-#define engine_scanset epoll_scanset
-#endif
-#ifdef USE_KQUEUE
-#define engine_scanset kqueue_scanset
-#endif
-#ifdef USE_SELECT
-#define engine_scanset select_scanset
-#endif
-
-// a list of variables used specifically by this engine
-
-#define kqueue_structs struct kevent ke; \
- struct kevent ke_list[33]; \
- struct timespec ts;
-
-#define epoll_structs struct epoll_event event[33];
-
-#define select_structs fd_set sfd;
-
-#ifdef USE_EPOLL
-#define engine_structs epoll_structs
-#endif
-#ifdef USE_KQUEUE
-#define engine_structs kqueue_structs
-#endif
-#ifdef USE_SELECT
-#define engine_structs select_structs
-#endif
-
-// how to initialise the engine before using it
-
-#define select_init while(0);
-
-#define kqueue_init kq = kqueue(); \
- lkq = kqueue(); \
- skq = kqueue(); \
- if ((kq == -1) || (lkq == -1) || (skq == -1)) \
- { \
- log(DEFAULT,"main: kqueue() failed!"); \
- printf("ERROR: could not initialise kqueue event system. Shutting down.\n"); \
- Exit(ERROR); \
- }
-
-#define epoll_init ep = epoll_create(MAXCLIENTS); \
- lep = epoll_create(32); \
- sep = epoll_create(128); \
- if ((ep == -1) || (lep == -1) || (sep == -1)) \
- { \
- log(DEFAULT,"main: epoll_create() failed!"); \
- printf("ERROR: could not initialise epoll event system. Shutting down.\n"); \
- Exit(ERROR); \
- }
-
-
-#ifdef USE_EPOLL
-#define engine_init epoll_init
-#endif
-#ifdef USE_KQUEUE
-#define engine_init kqueue_init
-#endif
-#ifdef USE_SELECT
-#define engine_init select_init
-#endif
-
-// how to delete a client fd from the engine
-
-#define kqueue_delete_fd struct kevent ke; \
- EV_SET(&ke, user->fd, EVFILT_READ, EV_DELETE, 0, 0, NULL); \
- int i = kevent(kq, &ke, 1, 0, 0, NULL); \
- if (i == -1) \
- { \
- log(DEBUG,"kqueue: Failed to remove user from queue!"); \
- }
-
-#define epoll_delete_fd struct epoll_event ev; \
- ev.events = EPOLLIN | EPOLLET; \
- ev.data.fd = user->fd; \
- int i = epoll_ctl(ep, EPOLL_CTL_DEL, user->fd, &ev); \
- if (i < 0) \
- { \
- log(DEBUG,"epoll: List deletion failure!"); \
- }
-
-#define select_delete_fd while(0);
-
-
-#ifdef USE_EPOLL
-#define engine_delete_fd epoll_delete_fd
-#endif
-#ifdef USE_KQUEUE
-#define engine_delete_fd kqueue_delete_fd
-#endif
-#ifdef USE_SELECT
-#define engine_delete_fd select_delete_fd
-#endif
-
-// how to add a client fd to the engine
-
-#define select_add_fd while(0);
-
-#define epoll_add_fd struct epoll_event ev; \
- log(DEBUG,"epoll: Adduser to events, ep=%d socket=%d",ep,socket); \
- ev.events = EPOLLIN | EPOLLET; \
- ev.data.fd = socket; \
- int i = epoll_ctl(ep, EPOLL_CTL_ADD, socket, &ev); \
- if (i < 0) \
- { \
- log(DEBUG,"epoll: List insertion failure!"); \
- }
-
-#define kqueue_add_fd struct kevent ke; \
- log(DEBUG,"kqueue: Add user to events, kq=%d socket=%d",kq,socket);\
- EV_SET(&ke, socket, EVFILT_READ, EV_ADD, 0, 0, NULL); \
- int i = kevent(kq, &ke, 1, 0, 0, NULL); \
- if (i == -1) \
- { \
- log(DEBUG,"kqueue: List insertion failure!"); \
- }
-
-#ifdef USE_EPOLL
-#define engine_add_fd epoll_add_fd
-#endif
-#ifdef USE_KQUEUE
-#define engine_add_fd kqueue_add_fd
-#endif
-#ifdef USE_SELECT
-#define engine_add_fd select_add_fd
-#endif
-
-#define select_server_fill log(DEFAULT,"Using standard select socket engine.");
-
-#define epoll_server_fill log(DEFAULT,"epoll socket engine is enabled. Filling listen list. boundPortcount=%d",boundPortCount); \
- for (count = 0; count < boundPortCount; count++) \
- { \
- struct epoll_event ev; \
- log(DEBUG,"epoll: Add listening socket to events, ep=%d socket=%d",lep,openSockfd[count]); \
- ev.events = EPOLLIN | EPOLLET; \
- ev.data.fd = openSockfd[count]; \
- int i = epoll_ctl(lep, EPOLL_CTL_ADD, openSockfd[count], &ev); \
- if (i < 0) \
- { \
- log(DEFAULT,"main: add listen ports, epoll_ctl failed!"); \
- printf("ERROR: could not initialise listening sockets in epoll list. Shutting down.\n"); \
- Exit(ERROR); \
- } \
- }
-
-#define kqueue_server_fill log(DEFAULT,"kqueue socket engine is enabled. Filling listen list."); \
- for (count = 0; count < boundPortCount; count++) \
- { \
- struct kevent ke; \
- log(DEBUG,"kqueue: Add listening socket to events, kq=%d socket=%d",lkq,openSockfd[count]); \
- EV_SET(&ke, openSockfd[count], EVFILT_READ, EV_ADD, 0, MaxConn, NULL); \
- int i = kevent(lkq, &ke, 1, 0, 0, NULL); \
- if (i == -1) \
- { \
- log(DEFAULT,"main: add listen ports to kqueue failed!"); \
- printf("ERROR: could not initialise listening sockets in kqueue. Shutting down.\n"); \
- Exit(ERROR); \
- } \
- }
-
-#ifdef USE_EPOLL
-#define engine_server_fill epoll_server_fill
-#endif
-#ifdef USE_KQUEUE
-#define engine_server_fill kqueue_server_fill
-#endif
-#ifdef USE_SELECT
-#define engine_server_fill select_server_fill
-#endif
-
-
-// what is this engine called?
-
-#ifdef USE_KQUEUE
-#define engine_name "kqueue"
-#endif
-#ifdef USE_SELECT
-#define engine_name "select"
-#endif
-#ifdef USE_EPOLL
-#define engine_name "epoll"
-#endif
-
-
-#endif
+ return false;
+}
projects / user / henk / code / inspircd.git / blobdiff