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/*
*
* (C) 2003-2010 Anope Team
* Contact us at team@anope.org
*
* Please read COPYING and README for furhter details.
*
* Based on the original code of Epona by Lara.
* Based on the original code of Services by Andy Church.
*/
#ifndef SOCKETS_H
#define SOCKETS_H
#define NET_BUFSIZE 65535
#ifdef _WIN32
# define CloseSocket closesocket
#else
# define CloseSocket close
#endif
class SocketException : public CoreException
{
public:
/** Default constructor for socket exceptions
* @param message Error message
*/
SocketException(const std::string &message) : CoreException(message) { }
/** Default destructor
* @throws Nothing
*/
virtual ~SocketException() throw() { }
};
enum SocketType
{
SOCKTYPE_CLIENT,
SOCKTYPE_LISTEN
};
enum SocketFlag
{
SF_DEAD
};
class CoreExport Socket : public Flags<SocketFlag, 1>
{
private:
/** Really recieve something from the buffer
* @param buf The buf to read to
* @param sz How much to read
* @return Number of bytes recieved
*/
virtual const int RecvInternal(char *buf, size_t sz) const;
/** Really write something to the socket
* @param buf What to write
* @return Number of bytes written
*/
virtual const int SendInternal(const std::string &buf) const;
protected:
/* Socket FD */
int sock;
/* IPv6? */
bool IPv6;
/* Things to be written to the socket */
std::string WriteBuffer;
/* Part of a message sent from the server, but not totally recieved */
std::string extrabuf;
/* How much data was received from this socket */
size_t RecvLen;
public:
/* Type this socket is */
SocketType Type;
/** Default constructor
* @param nsock The socket to use, 0 if we need to create our own
* @param nIPv6 true if using ipv6
*/
Socket(int nsock, bool nIPv6);
/** Default destructor
*/
virtual ~Socket();
/** Get the socket FD for this socket
* @return the fd
*/
int GetSock() const;
/** Mark a socket as blockig
* @return true if the socket is now blocking
*/
bool SetBlocking();
/** Mark a socket as non-blocking
* @return true if the socket is now non-blocking
*/
bool SetNonBlocking();
/** Check if this socket is IPv6
* @return true or false
*/
bool IsIPv6() const;
/** Get the length of the read buffer
* @return The length of the read buffer
*/
size_t ReadBufferLen() const;
/** Get the length of the write buffer
* @return The length of the write buffer
*/
size_t WriteBufferLen() const;
/** Called when there is something to be recieved for this socket
* @return true on success, false to drop this socket
*/
virtual bool ProcessRead();
/** Called when there is something to be written to this socket
* @return true on success, false to drop this socket
*/
virtual bool ProcessWrite();
/** Called when there is an error for this socket
* @return true on success, false to drop this socket
*/
virtual void ProcessError();
/** Called with a line recieved from the socket
* @param buf The line
* @return true to continue reading, false to drop the socket
*/
virtual bool Read(const std::string &buf);
/** Write to the socket
* @param message The message
*/
void Write(const char *message, ...);
void Write(const std::string &message);
};
class CoreExport ClientSocket : public Socket
{
protected:
/* Target host we're connected to */
std::string TargetHost;
/* Target port we're connected to */
int Port;
/* The host to bind to */
std::string BindHost;
public:
/** Constructor
* @param nTargetHost The target host to connect to
* @param nPort The target port to connect to
* @param nBindHost The host to bind to for connecting
* @param nIPv6 true to use IPv6
*/
ClientSocket(const std::string &nTargetHost, int nPort, const std::string &nBindHost, bool nIPv6);
/** Default destructor
*/
virtual ~ClientSocket();
/** Called with a line recieved from the socket
* @param buf The line
* @return true to continue reading, false to drop the socket
*/
virtual bool Read(const std::string &buf);
};
class CoreExport ListenSocket : public Socket
{
protected:
/* Bind IP */
std::string BindIP;
/* Port to bind to */
int Port;
public:
/** Constructor
* @param bind The IP to bind to
* @param port The port to listen on
*/
ListenSocket(const std::string &bind, int port);
/** Destructor
*/
virtual ~ListenSocket();
/** Process what has come in from the connection
* @return false to destory this socket
*/
bool ProcessRead();
/** Called when a connection is accepted
* @param s The socket for the new connection
* @return true if the listen socket should remain alive
*/
virtual bool OnAccept(Socket *s);
/** Get the bind IP for this socket
* @return the bind ip
*/
const std::string &GetBindIP() const;
/** Get the port this socket is bound to
* @return The port
*/
const int GetPort() const;
};
#endif // SOCKET_H
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