summaryrefslogtreecommitdiff
path: root/include/inspsocket.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/inspsocket.h')
-rw-r--r--include/inspsocket.h438
1 files changed, 437 insertions, 1 deletions
diff --git a/include/inspsocket.h b/include/inspsocket.h
index 98fbc018f..d165d64f2 100644
--- a/include/inspsocket.h
+++ b/include/inspsocket.h
@@ -1 +1,437 @@
-/* +------------------------------------+ * | Inspire Internet Relay Chat Daemon | * +------------------------------------+ * * InspIRCd: (C) 2002-2007 InspIRCd Development Team * See: http://www.inspircd.org/wiki/index.php/Credits * * This program is free but copyrighted software; see * the file COPYING for details. * * --------------------------------------------------- */ #ifndef __INSP_SOCKET_H__ #define __INSP_SOCKET_H__ #include <sstream> #include <string> #include <deque> #include "dns.h" #include "inspircd_config.h" #include "socket.h" #include "inspsocket.h" #include "timer.h" /** * States which a socket may be in */ enum InspSocketState { /** Socket disconnected */ I_DISCONNECTED, /** Socket connecting */ I_CONNECTING, /** Socket fully connected */ I_CONNECTED, /** Socket listening for connections */ I_LISTENING, /** Socket has an error */ I_ERROR }; /** * Error types which a socket may exhibit */ enum InspSocketError { /** Socket connect timed out */ I_ERR_TIMEOUT, /** Socket could not be created */ I_ERR_SOCKET, /** Socket could not connect (refused) */ I_ERR_CONNECT, /** Socket could not bind to local port/ip */ I_ERR_BIND, /** Socket could not reslve host (depreciated) */ I_ERR_RESOLVE, /** Socket could not write data */ I_ERR_WRITE, /** No more file descriptors left to create socket! */ I_ERR_NOMOREFDS }; /* Required forward declarations */ class InspSocket; class InspIRCd; using irc::sockets::insp_sockaddr; using irc::sockets::insp_inaddr; using irc::sockets::insp_ntoa; using irc::sockets::insp_aton; /** Used to time out socket connections */ class CoreExport SocketTimeout : public InspTimer { private: /** InspSocket the class is attached to */ InspSocket* sock; /** Server instance creating the timeout class */ InspIRCd* ServerInstance; /** File descriptor of class this is attached to */ int sfd; public: /** Create a socket timeout class * @param fd File descriptor of InspSocket * @pram Instance server instance to attach to * @param thesock InspSocket to attach to * @param secs_from_now Seconds from now to time out * @param now The current time */ SocketTimeout(int fd, InspIRCd* Instance, InspSocket* thesock, long secs_from_now, time_t now) : InspTimer(secs_from_now, now), sock(thesock), ServerInstance(Instance), sfd(fd) { }; /** Handle tick event */ virtual void Tick(time_t now); }; /** * InspSocket is an extendable socket class which modules * can use for TCP socket support. It is fully integrated * into InspIRCds socket loop and attaches its sockets to * the core's instance of the SocketEngine class, meaning * that any sockets you create have the same power and * abilities as a socket created by the core itself. * To use InspSocket, you must inherit a class from it, * and use the InspSocket constructors to establish connections * and bindings. */ class CoreExport InspSocket : public EventHandler { public: /** * Bind IP */ std::string cbindip; /** * Is hooked by a module for low level IO */ bool IsIOHooked; /** * Instance we were created by */ InspIRCd* Instance; /** * Timeout class or NULL */ SocketTimeout* Timeout; /** * Timeout length */ unsigned long timeout_val; /** * Socket output buffer (binary safe) */ std::deque<std::string> outbuffer; /** * The hostname connected to */ char host[MAXBUF]; /** * The port connected to, or the port * this socket is listening on */ int port; /** * The state for this socket, either * listening, connecting, connected * or error. */ InspSocketState state; /** * This value is true if the * socket has timed out. */ bool timeout; /** * Socket input buffer, used by read(). The class which * extends InspSocket is expected to implement an extendable * buffer which can grow much larger than 64k, * this buffer is just designed to be temporary storage. * space. */ char ibuf[65535]; /** * The IP address being connected * to stored in string form for * easy retrieval by accessors. */ char IP[MAXBUF]; /** * Used by accept() to indicate the * sizes of the sockaddr_in structures */ socklen_t length; /** Flushes the write buffer */ bool FlushWriteBuffer(); /** Set the queue sizes * This private method sets the operating system queue * sizes for this socket to 65535 so that it can queue * more information without application-level queueing * which was required in older software. */ void SetQueues(int nfd); /** When the socket has been marked as closing, this flag * will be set to true, then the next time the socket is * examined, the socket is deleted and closed. */ bool ClosePending; /** Set to true when we're waiting for a write event. * If this is true and a write event comes in, we * call the write instead of the read method. */ bool WaitingForWriteEvent; /** * Bind to an address * @param ip IP to bind to * @return True is the binding succeeded */ bool BindAddr(const std::string &ip); /** * The default constructor does nothing * and should not be used. */ InspSocket(InspIRCd* SI); /** * This constructor is used to associate * an existing connecting with an InspSocket * class. The given file descriptor must be * valid, and when initialized, the InspSocket * will be set with the given IP address * and placed in CONNECTED state. */ InspSocket(InspIRCd* SI, int newfd, const char* ip); /** * This constructor is used to create a new * socket, either listening for connections, or an outbound connection to another host. * Note that if you specify a hostname in the 'ipaddr' parameter, this class will not * connect. You must resolve your hostnames before passing them to InspSocket. To do so, * you should use the nonblocking class 'Resolver'. * @param ipaddr The IP to connect to, or bind to * @param port The port number to connect to, or bind to * @param listening true to listen on the given host:port pair, or false to connect to them * @param maxtime Number of seconds to wait, if connecting, before the connection times out and an OnTimeout() event is generated * @param connectbindip When creating an outbound connection, the IP to bind the connection to. If not defined, the port is not bound. * @return On exit, GetState() returns I_ERROR if an error occured, and errno can be used to read the socket error. */ InspSocket(InspIRCd* SI, const std::string &ipaddr, int port, bool listening, unsigned long maxtime, const std::string &connectbindip = ""); /** * This method is called when an outbound * connection on your socket is completed. * @return false to abort the connection, true to continue */ virtual bool OnConnected(); /** * This method is called when an error occurs. * A closed socket in itself is not an error, * however errors also generate close events. * @param e The error type which occured */ virtual void OnError(InspSocketError e); /** * When an established connection is terminated, * the OnDisconnect method is triggered. */ virtual int OnDisconnect(); /** * When there is data waiting to be read on a * socket, the OnDataReady() method is called. * Within this method, you *MUST* call the Read() * method to read any pending data. At its lowest * level, this event is signalled by the core via * the socket engine. If you return false from this * function, the core removes your socket from its * list and erases it from the socket engine, then * calls InspSocket::Close() and deletes it. * @return false to close the socket */ virtual bool OnDataReady(); /** * When it is ok to write to the socket, and a * write event was requested, this method is * triggered. Within this method you should call * write() or send() etc, to send data to the * other end of the socket. Further write events * will not be triggered unless you call WantWrite(). * @return false to close the socket */ virtual bool OnWriteReady(); /** * When an outbound connection fails, and the * attempt times out, you will receive this event. * The method will trigger once maxtime seconds are * reached (as given in the constructor) just * before the socket's descriptor is closed. * A failed DNS lookup may cause this event if * the DNS server is not responding, as well as * a failed connect() call, because DNS lookups are * nonblocking as implemented by this class. */ virtual void OnTimeout(); /** * Whenever close() is called, OnClose() will be * called first. Please note that this means * OnClose will be called alongside OnError(), * OnTimeout(), and Close(), and also when * cancelling a listening socket by calling * the destructor indirectly. */ virtual void OnClose(); /** * Reads all pending bytes from the socket * into a char* array which can be up to * 16 kilobytes in length. */ virtual char* Read(); /** * Returns the IP address associated with * this connection, or an empty string if * no IP address exists. */ std::string GetIP(); /** * Writes a std::string to the socket. No carriage * returns or linefeeds are appended to the string. * @param data The data to send */ virtual int Write(const std::string &data); /** * If your socket is a listening socket, when a new * connection comes in on the socket this method will * be called. Given the new file descriptor in the * parameters, and the IP, it is recommended you copy * them to a new instance of your socket class, * e.g.: * * MySocket* newsocket = new MySocket(newfd,ip); * * Once you have done this, you can then associate the * new socket with the core using Server::AddSocket(). */ virtual int OnIncomingConnection(int newfd, char* ip); /** * Changes the socket's state. The core uses this * to change socket states, and you should not call * it directly. */ void SetState(InspSocketState s); /** * Call this to receive the next write event * that comes along for this fd to the OnWriteReady * method. */ void WantWrite(); /** * Returns the current socket state. */ InspSocketState GetState(); /** * Only the core should call this function. * When called, it is assumed the socket is ready * to read data, and the method call routes the * event to the various methods of InspSocket * for you to handle. This can also cause the * socket's state to change. */ bool Poll(); /** * This method returns the socket's file descriptor * as assigned by the operating system, or -1 * if no descriptor has been assigned. */ int GetFd(); /** * This method causes the socket to close, and may * also be triggered by other methods such as OnTimeout * and OnError. */ virtual void Close(); /** * The destructor may implicitly call OnClose(), and * will close() and shutdown() the file descriptor * used for this socket. */ virtual ~InspSocket(); /** * This method attempts to connect to a hostname. * This only occurs on a non-listening socket. This * method is asyncronous. */ virtual bool DoConnect(); /** * This method marks the socket closed. * The next time the core examines a socket marked * as closed, the socket will be closed and the * memory reclaimed. * * NOTE: This method is DEPRECIATED and will be * ignored if called! */ void MarkAsClosed(); /** Handle event from EventHandler parent class */ void HandleEvent(EventType et, int errornum = 0); /** Returns true if this socket is readable */ bool Readable(); }; #endif \ No newline at end of file
+/* +------------------------------------+
+ * | Inspire Internet Relay Chat Daemon |
+ * +------------------------------------+
+ *
+ * InspIRCd: (C) 2002-2007 InspIRCd Development Team
+ * See: http://www.inspircd.org/wiki/index.php/Credits
+ *
+ * This program is free but copyrighted software; see
+ * the file COPYING for details.
+ *
+ * ---------------------------------------------------
+ */
+
+#ifndef __INSP_SOCKET_H__
+#define __INSP_SOCKET_H__
+
+#include <sstream>
+#include <string>
+#include <deque>
+#include "dns.h"
+#include "inspircd_config.h"
+#include "socket.h"
+#include "inspsocket.h"
+#include "timer.h"
+
+/**
+ * States which a socket may be in
+ */
+enum InspSocketState
+{
+ /** Socket disconnected */
+ I_DISCONNECTED,
+ /** Socket connecting */
+ I_CONNECTING,
+ /** Socket fully connected */
+ I_CONNECTED,
+ /** Socket listening for connections */
+ I_LISTENING,
+ /** Socket has an error */
+ I_ERROR
+};
+
+/**
+ * Error types which a socket may exhibit
+ */
+enum InspSocketError
+{
+ /** Socket connect timed out */
+ I_ERR_TIMEOUT,
+ /** Socket could not be created */
+ I_ERR_SOCKET,
+ /** Socket could not connect (refused) */
+ I_ERR_CONNECT,
+ /** Socket could not bind to local port/ip */
+ I_ERR_BIND,
+ /** Socket could not reslve host (depreciated) */
+ I_ERR_RESOLVE,
+ /** Socket could not write data */
+ I_ERR_WRITE,
+ /** No more file descriptors left to create socket! */
+ I_ERR_NOMOREFDS
+};
+
+/* Required forward declarations */
+class InspSocket;
+class InspIRCd;
+
+using irc::sockets::insp_sockaddr;
+using irc::sockets::insp_inaddr;
+using irc::sockets::insp_ntoa;
+using irc::sockets::insp_aton;
+
+/** Used to time out socket connections
+ */
+class CoreExport SocketTimeout : public InspTimer
+{
+ private:
+ /** InspSocket the class is attached to
+ */
+ InspSocket* sock;
+ /** Server instance creating the timeout class
+ */
+ InspIRCd* ServerInstance;
+ /** File descriptor of class this is attached to
+ */
+ int sfd;
+ public:
+ /** Create a socket timeout class
+ * @param fd File descriptor of InspSocket
+ * @pram Instance server instance to attach to
+ * @param thesock InspSocket to attach to
+ * @param secs_from_now Seconds from now to time out
+ * @param now The current time
+ */
+ SocketTimeout(int fd, InspIRCd* Instance, InspSocket* thesock, long secs_from_now, time_t now) : InspTimer(secs_from_now, now), sock(thesock), ServerInstance(Instance), sfd(fd) { };
+ /** Handle tick event
+ */
+ virtual void Tick(time_t now);
+};
+
+/**
+ * InspSocket is an extendable socket class which modules
+ * can use for TCP socket support. It is fully integrated
+ * into InspIRCds socket loop and attaches its sockets to
+ * the core's instance of the SocketEngine class, meaning
+ * that any sockets you create have the same power and
+ * abilities as a socket created by the core itself.
+ * To use InspSocket, you must inherit a class from it,
+ * and use the InspSocket constructors to establish connections
+ * and bindings.
+ */
+class CoreExport InspSocket : public EventHandler
+{
+ public:
+
+ /**
+ * Bind IP
+ */
+ std::string cbindip;
+
+ /**
+ * Is hooked by a module for low level IO
+ */
+ bool IsIOHooked;
+
+ /**
+ * Instance we were created by
+ */
+ InspIRCd* Instance;
+
+ /**
+ * Timeout class or NULL
+ */
+ SocketTimeout* Timeout;
+
+ /**
+ * Timeout length
+ */
+ unsigned long timeout_val;
+
+ /**
+ * Socket output buffer (binary safe)
+ */
+ std::deque<std::string> outbuffer;
+
+ /**
+ * The hostname connected to
+ */
+ char host[MAXBUF];
+
+ /**
+ * The port connected to, or the port
+ * this socket is listening on
+ */
+ int port;
+
+ /**
+ * The state for this socket, either
+ * listening, connecting, connected
+ * or error.
+ */
+ InspSocketState state;
+
+ /**
+ * This value is true if the
+ * socket has timed out.
+ */
+ bool timeout;
+
+ /**
+ * Socket input buffer, used by read(). The class which
+ * extends InspSocket is expected to implement an extendable
+ * buffer which can grow much larger than 64k,
+ * this buffer is just designed to be temporary storage.
+ * space.
+ */
+ char ibuf[65535];
+
+ /**
+ * The IP address being connected
+ * to stored in string form for
+ * easy retrieval by accessors.
+ */
+ char IP[MAXBUF];
+
+ /**
+ * Used by accept() to indicate the
+ * sizes of the sockaddr_in structures
+ */
+ socklen_t length;
+
+ /** Flushes the write buffer
+ */
+ bool FlushWriteBuffer();
+
+ /** Set the queue sizes
+ * This private method sets the operating system queue
+ * sizes for this socket to 65535 so that it can queue
+ * more information without application-level queueing
+ * which was required in older software.
+ */
+ void SetQueues(int nfd);
+
+ /** When the socket has been marked as closing, this flag
+ * will be set to true, then the next time the socket is
+ * examined, the socket is deleted and closed.
+ */
+ bool ClosePending;
+
+ /** Set to true when we're waiting for a write event.
+ * If this is true and a write event comes in, we
+ * call the write instead of the read method.
+ */
+ bool WaitingForWriteEvent;
+
+ /**
+ * Bind to an address
+ * @param ip IP to bind to
+ * @return True is the binding succeeded
+ */
+ bool BindAddr(const std::string &ip);
+
+ /**
+ * The default constructor does nothing
+ * and should not be used.
+ */
+ InspSocket(InspIRCd* SI);
+
+ /**
+ * This constructor is used to associate
+ * an existing connecting with an InspSocket
+ * class. The given file descriptor must be
+ * valid, and when initialized, the InspSocket
+ * will be set with the given IP address
+ * and placed in CONNECTED state.
+ */
+ InspSocket(InspIRCd* SI, int newfd, const char* ip);
+
+ /**
+ * This constructor is used to create a new
+ * socket, either listening for connections, or an outbound connection to another host.
+ * Note that if you specify a hostname in the 'ipaddr' parameter, this class will not
+ * connect. You must resolve your hostnames before passing them to InspSocket. To do so,
+ * you should use the nonblocking class 'Resolver'.
+ * @param ipaddr The IP to connect to, or bind to
+ * @param port The port number to connect to, or bind to
+ * @param listening true to listen on the given host:port pair, or false to connect to them
+ * @param maxtime Number of seconds to wait, if connecting, before the connection times out and an OnTimeout() event is generated
+ * @param connectbindip When creating an outbound connection, the IP to bind the connection to. If not defined, the port is not bound.
+ * @return On exit, GetState() returns I_ERROR if an error occured, and errno can be used to read the socket error.
+ */
+ InspSocket(InspIRCd* SI, const std::string &ipaddr, int port, bool listening, unsigned long maxtime, const std::string &connectbindip = "");
+
+ /**
+ * This method is called when an outbound
+ * connection on your socket is completed.
+ * @return false to abort the connection, true to continue
+ */
+ virtual bool OnConnected();
+
+ /**
+ * This method is called when an error occurs.
+ * A closed socket in itself is not an error,
+ * however errors also generate close events.
+ * @param e The error type which occured
+ */
+ virtual void OnError(InspSocketError e);
+
+ /**
+ * When an established connection is terminated,
+ * the OnDisconnect method is triggered.
+ */
+ virtual int OnDisconnect();
+
+ /**
+ * When there is data waiting to be read on a
+ * socket, the OnDataReady() method is called.
+ * Within this method, you *MUST* call the Read()
+ * method to read any pending data. At its lowest
+ * level, this event is signalled by the core via
+ * the socket engine. If you return false from this
+ * function, the core removes your socket from its
+ * list and erases it from the socket engine, then
+ * calls InspSocket::Close() and deletes it.
+ * @return false to close the socket
+ */
+ virtual bool OnDataReady();
+
+ /**
+ * When it is ok to write to the socket, and a
+ * write event was requested, this method is
+ * triggered. Within this method you should call
+ * write() or send() etc, to send data to the
+ * other end of the socket. Further write events
+ * will not be triggered unless you call WantWrite().
+ * @return false to close the socket
+ */
+ virtual bool OnWriteReady();
+
+ /**
+ * When an outbound connection fails, and the
+ * attempt times out, you will receive this event.
+ * The method will trigger once maxtime seconds are
+ * reached (as given in the constructor) just
+ * before the socket's descriptor is closed.
+ * A failed DNS lookup may cause this event if
+ * the DNS server is not responding, as well as
+ * a failed connect() call, because DNS lookups are
+ * nonblocking as implemented by this class.
+ */
+ virtual void OnTimeout();
+
+ /**
+ * Whenever close() is called, OnClose() will be
+ * called first. Please note that this means
+ * OnClose will be called alongside OnError(),
+ * OnTimeout(), and Close(), and also when
+ * cancelling a listening socket by calling
+ * the destructor indirectly.
+ */
+ virtual void OnClose();
+
+ /**
+ * Reads all pending bytes from the socket
+ * into a char* array which can be up to
+ * 16 kilobytes in length.
+ */
+ virtual char* Read();
+
+ /**
+ * Returns the IP address associated with
+ * this connection, or an empty string if
+ * no IP address exists.
+ */
+ std::string GetIP();
+
+ /**
+ * Writes a std::string to the socket. No carriage
+ * returns or linefeeds are appended to the string.
+ * @param data The data to send
+ */
+ virtual int Write(const std::string &data);
+
+ /**
+ * If your socket is a listening socket, when a new
+ * connection comes in on the socket this method will
+ * be called. Given the new file descriptor in the
+ * parameters, and the IP, it is recommended you copy
+ * them to a new instance of your socket class,
+ * e.g.:
+ *
+ * MySocket* newsocket = new MySocket(newfd,ip);
+ *
+ * Once you have done this, you can then associate the
+ * new socket with the core using Server::AddSocket().
+ */
+ virtual int OnIncomingConnection(int newfd, char* ip);
+
+ /**
+ * Changes the socket's state. The core uses this
+ * to change socket states, and you should not call
+ * it directly.
+ */
+ void SetState(InspSocketState s);
+
+ /**
+ * Call this to receive the next write event
+ * that comes along for this fd to the OnWriteReady
+ * method.
+ */
+ void WantWrite();
+
+ /**
+ * Returns the current socket state.
+ */
+ InspSocketState GetState();
+
+ /**
+ * Only the core should call this function.
+ * When called, it is assumed the socket is ready
+ * to read data, and the method call routes the
+ * event to the various methods of InspSocket
+ * for you to handle. This can also cause the
+ * socket's state to change.
+ */
+ bool Poll();
+
+ /**
+ * This method returns the socket's file descriptor
+ * as assigned by the operating system, or -1
+ * if no descriptor has been assigned.
+ */
+ int GetFd();
+
+ /**
+ * This method causes the socket to close, and may
+ * also be triggered by other methods such as OnTimeout
+ * and OnError.
+ */
+ virtual void Close();
+
+ /**
+ * The destructor may implicitly call OnClose(), and
+ * will close() and shutdown() the file descriptor
+ * used for this socket.
+ */
+ virtual ~InspSocket();
+
+ /**
+ * This method attempts to connect to a hostname.
+ * This only occurs on a non-listening socket. This
+ * method is asyncronous.
+ */
+ virtual bool DoConnect();
+
+ /**
+ * This method marks the socket closed.
+ * The next time the core examines a socket marked
+ * as closed, the socket will be closed and the
+ * memory reclaimed.
+ *
+ * NOTE: This method is DEPRECIATED and will be
+ * ignored if called!
+ */
+ void MarkAsClosed();
+
+ /** Handle event from EventHandler parent class
+ */
+ void HandleEvent(EventType et, int errornum = 0);
+
+ /** Returns true if this socket is readable
+ */
+ bool Readable();
+};
+
+#endif
+