added synclistensocket

1 files changed, 421 insertions, 0 deletions

diff --git a/syncListenSocket.h b/syncListenSocket.h
new file mode 100644
index 0000000..359c14d
--- /dev/null
+++ b/syncListenSocket.h
@@ -0,0 +1,421 @@
+/** \file ListenSocket.h
+ **	\date  2004-02-13
+ **	\author grymse@alhem.net
+**/
+/*
+Copyright (C) 2004-2007  Anders Hedstrom
+
+This library is made available under the terms of the GNU GPL.
+
+If you would like to use this library in a closed-source application,
+a separate license agreement is available. For information about 
+the closed-source license agreement for the C++ sockets library,
+please visit http://www.alhem.net/Sockets/license.html and/or
+email license@alhem.net.
+
+This program 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; either version 2
+of the License, or (at your option) any later version.
+
+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, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+*/
+#ifndef _SOCKETS_SyncListenSocket_H
+#define _SOCKETS_SyncListenSocket_H
+#include "Sockets/sockets-config.h"
+
+#ifdef _WIN32
+#include <stdlib.h>
+#else
+#include <errno.h>
+#endif
+
+#include "Sockets/ISocketHandler.h"
+#include "Sockets/Socket.h"
+#include "Sockets/Utility.h"
+#include "Sockets/SctpSocket.h"
+#include "Sockets/Ipv4Address.h"
+#include "Sockets/Ipv6Address.h"
+#ifdef ENABLE_EXCEPTIONS
+#include "Sockets/Exception.h"
+#endif
+
+#ifdef SOCKETS_NAMESPACE
+namespace SOCKETS_NAMESPACE {
+#endif
+
+
+/** Binds incoming port number to new Socket class X. 
+	\ingroup basic */
+template <class X,class Y>
+class SyncListenSocket : public Socket
+{
+public:
+	/** Constructor.
+		\param h ISocketHandler reference
+		\param use_creator Optional use of creator (default true) */
+	SyncListenSocket(ISocketHandler& h, Y & y,bool use_creator = true) : Socket(h), m_depth(0), m_creator(NULL),y_(y)
+	,m_bHasCreate(false)
+	{
+		if (use_creator)
+		{
+			m_creator = new X(h,y);
+			Socket *tmp = m_creator -> Create();
+			if (tmp && dynamic_cast<X *>(tmp))
+			{
+				m_bHasCreate = true;
+			}
+			if (tmp)
+			{
+				delete tmp;
+			}
+		}
+	}
+	~SyncListenSocket() {
+		if (m_creator)
+		{
+			delete m_creator;
+		}
+	}
+
+	/** Close file descriptor. */
+	int Close() {
+		if (GetSocket() != INVALID_SOCKET)
+		{
+			closesocket(GetSocket());
+		}
+		return 0;
+	}
+
+	/** Bind and listen to any interface.
+		\param port Port (0 is random)
+		\param depth Listen queue depth */
+	int Bind(port_t port,int depth = 20) {
+#ifdef ENABLE_IPV6
+#ifdef IPPROTO_IPV6
+		if (IsIpv6())
+		{
+			Ipv6Address ad(port);
+			return Bind(ad, depth);
+		}
+		else
+#endif
+#endif
+		{
+			Ipv4Address ad(port);
+			return Bind(ad, depth);
+		}
+	}
+
+	int Bind(SocketAddress& ad,int depth) {
+#ifdef USE_SCTP
+		if (dynamic_cast<SctpSocket *>(m_creator))
+		{
+			return Bind(ad, "sctp", depth);
+		}
+#endif
+		return Bind(ad, "tcp", depth);
+	}
+
+	/** Bind and listen to any interface, with optional protocol.
+		\param port Port (0 is random)
+		\param protocol Network protocol
+		\param depth Listen queue depth */
+	int Bind(port_t port,const std::string& protocol,int depth = 20) {
+#ifdef ENABLE_IPV6
+#ifdef IPPROTO_IPV6
+		if (IsIpv6())
+		{
+			Ipv6Address ad(port);
+			return Bind(ad, protocol, depth);
+		}
+		else
+#endif
+#endif
+		{
+			Ipv4Address ad(port);
+			return Bind(ad, protocol, depth);
+		}
+	}
+
+	/** Bind and listen to specific interface.
+		\param intf Interface hostname
+		\param port Port (0 is random)
+		\param depth Listen queue depth */
+	int Bind(const std::string& intf,port_t port,int depth = 20) {
+#ifdef ENABLE_IPV6
+#ifdef IPPROTO_IPV6
+		if (IsIpv6())
+		{
+			Ipv6Address ad(intf, port);
+			if (ad.IsValid())
+			{
+				return Bind(ad, depth);
+			}
+			Handler().LogError(this, "Bind", 0, "name resolution of interface name failed", LOG_LEVEL_FATAL);
+			return -1;
+		}
+		else
+#endif
+#endif
+		{
+			Ipv4Address ad(intf, port);
+			if (ad.IsValid())
+			{
+				return Bind(ad, depth);
+			}
+			Handler().LogError(this, "Bind", 0, "name resolution of interface name failed", LOG_LEVEL_FATAL);
+			return -1;
+		}
+	}
+
+	/** Bind and listen to specific interface.
+		\param intf Interface hostname
+		\param port Port (0 is random)
+		\param protocol Network protocol
+		\param depth Listen queue depth */
+	int Bind(const std::string& intf,port_t port,const std::string& protocol,int depth = 20) {
+#ifdef ENABLE_IPV6
+#ifdef IPPROTO_IPV6
+		if (IsIpv6())
+		{
+			Ipv6Address ad(intf, port);
+			if (ad.IsValid())
+			{
+				return Bind(ad, protocol, depth);
+			}
+			Handler().LogError(this, "Bind", 0, "name resolution of interface name failed", LOG_LEVEL_FATAL);
+			return -1;
+		}
+		else
+#endif
+#endif
+		{
+			Ipv4Address ad(intf, port);
+			if (ad.IsValid())
+			{
+				return Bind(ad, protocol, depth);
+			}
+			Handler().LogError(this, "Bind", 0, "name resolution of interface name failed", LOG_LEVEL_FATAL);
+			return -1;
+		}
+	}
+
+	/** Bind and listen to ipv4 interface.
+		\param a Ipv4 interface address
+		\param port Port (0 is random)
+		\param depth Listen queue depth */
+	int Bind(ipaddr_t a,port_t port,int depth = 20) {
+		Ipv4Address ad(a, port);
+#ifdef USE_SCTP
+		if (dynamic_cast<SctpSocket *>(m_creator))
+		{
+			return Bind(ad, "sctp", depth);
+		}
+#endif
+		return Bind(ad, "tcp", depth);
+	}
+	/** Bind and listen to ipv4 interface.
+		\param a Ipv4 interface address
+		\param port Port (0 is random)
+		\param protocol Network protocol
+		\param depth Listen queue depth */
+	int Bind(ipaddr_t a,port_t port,const std::string& protocol,int depth) {
+		Ipv4Address ad(a, port);
+		return Bind(ad, protocol, depth);
+	}
+
+#ifdef ENABLE_IPV6
+#ifdef IPPROTO_IPV6
+	/** Bind and listen to ipv6 interface.
+		\param a Ipv6 interface address
+		\param port Port (0 is random)
+		\param depth Listen queue depth */
+	int Bind(in6_addr a,port_t port,int depth = 20) {
+		Ipv6Address ad(a, port);
+#ifdef USE_SCTP
+		if (dynamic_cast<SctpSocket *>(m_creator))
+		{
+			return Bind(ad, "sctp", depth);
+		}
+#endif
+		return Bind(ad, "tcp", depth);
+	}
+	/** Bind and listen to ipv6 interface.
+		\param a Ipv6 interface address
+		\param port Port (0 is random)
+		\param protocol Network protocol
+		\param depth Listen queue depth */
+	int Bind(in6_addr a,port_t port,const std::string& protocol,int depth) {
+		Ipv6Address ad(a, port);
+		return Bind(ad, protocol, depth);
+	}
+#endif
+#endif
+
+	/** Bind and listen to network interface.
+		\param ad Interface address
+		\param protocol Network protocol
+		\param depth Listen queue depth */
+	int Bind(SocketAddress& ad,const std::string& protocol,int depth) {
+		SOCKET s;
+		if ( (s = CreateSocket(ad.GetFamily(), SOCK_STREAM, protocol)) == INVALID_SOCKET)
+		{
+			return -1;
+		}
+		if (bind(s, ad, ad) == -1)
+		{
+			Handler().LogError(this, "bind", Errno, StrError(Errno), LOG_LEVEL_FATAL);
+			closesocket(s);
+#ifdef ENABLE_EXCEPTIONS
+			throw Exception("bind() failed for port " + Utility::l2string(ad.GetPort()) + ": " + StrError(Errno));
+#endif
+			return -1;
+		}
+		if (listen(s, depth) == -1)
+		{
+			Handler().LogError(this, "listen", Errno, StrError(Errno), LOG_LEVEL_FATAL);
+			closesocket(s);
+#ifdef ENABLE_EXCEPTIONS
+			throw Exception("listen() failed for port " + Utility::l2string(ad.GetPort()) + ": " + StrError(Errno));
+#endif
+			return -1;
+		}
+		m_depth = depth;
+		Attach(s);
+		return 0;
+	}
+
+	/** Return assigned port number. */
+	port_t GetPort()
+	{
+		return GetSockPort();
+	}
+
+	/** Return listen queue depth. */
+	int GetDepth()
+	{
+		return m_depth;
+	}
+
+	/** OnRead on a ListenSocket receives an incoming connection. */
+	void OnRead()
+	{
+		struct sockaddr sa;
+		socklen_t sa_len = sizeof(struct sockaddr);
+		SOCKET a_s = accept(GetSocket(), &sa, &sa_len);
+
+		if (a_s == INVALID_SOCKET)
+		{
+			Handler().LogError(this, "accept", Errno, StrError(Errno), LOG_LEVEL_ERROR);
+			return;
+		}
+		if (!Handler().OkToAccept(this))
+		{
+			Handler().LogError(this, "accept", -1, "Not OK to accept", LOG_LEVEL_WARNING);
+			closesocket(a_s);
+			return;
+		}
+		if (Handler().GetCount() >= FD_SETSIZE)
+		{
+			Handler().LogError(this, "accept", (int)Handler().GetCount(), "ISocketHandler fd_set limit reached", LOG_LEVEL_FATAL);
+			closesocket(a_s);
+			return;
+		}
+		Socket *tmp = m_bHasCreate ? m_creator -> Create() : new X(Handler(),y_);
+#ifdef ENABLE_IPV6
+		tmp -> SetIpv6( IsIpv6() );
+#endif
+		tmp -> SetParent(this);
+		tmp -> Attach(a_s);
+		tmp -> SetNonblocking(true);
+		{
+#ifdef ENABLE_IPV6
+#ifdef IPPROTO_IPV6
+			if (sa_len == sizeof(struct sockaddr_in6))
+			{
+				struct sockaddr_in6 *p = (struct sockaddr_in6 *)&sa;
+				if (p -> sin6_family == AF_INET6)
+				{
+					Ipv6Address ad(p -> sin6_addr,ntohs(p -> sin6_port));
+					ad.SetFlowinfo(p -> sin6_flowinfo);
+#ifndef _WIN32
+					ad.SetScopeId(p -> sin6_scope_id);
+#endif
+					tmp -> SetRemoteAddress(ad);
+				}
+			}
+#endif
+#endif
+			if (sa_len == sizeof(struct sockaddr_in))
+			{
+				struct sockaddr_in *p = (struct sockaddr_in *)&sa;
+				if (p -> sin_family == AF_INET)
+				{
+					Ipv4Address ad(p -> sin_addr,ntohs(p -> sin_port));
+					tmp -> SetRemoteAddress(ad);
+				}
+			}
+		}
+		tmp -> SetConnected(true);
+		tmp -> Init();
+		tmp -> SetDeleteByHandler(true);
+		Handler().Add(tmp);
+#ifdef HAVE_OPENSSL
+		if (tmp -> IsSSL()) // SSL Enabled socket
+		{
+			// %! OnSSLAccept calls SSLNegotiate that can finish in this one call.
+			// %! If that happens and negotiation fails, the 'tmp' instance is
+			// %! still added to the list of active sockets in the sockethandler.
+			// %! See bugfix for this in SocketHandler::Select - don't Set rwx
+			// %! flags if CloseAndDelete() flag is true.
+			// %! An even better fugbix (see TcpSocket::OnSSLAccept) now avoids
+			// %! the Add problem altogether, so ignore the above.
+			// %! (OnSSLAccept does no longer call SSLNegotiate().)
+			tmp -> OnSSLAccept();
+		}
+		else
+#endif
+		{
+			tmp -> OnAccept();
+		}
+	}
+
+	/** Please don't use this method.
+		"accept()" is handled automatically in the OnRead() method. */
+        virtual SOCKET Accept(SOCKET socket, struct sockaddr *saptr, socklen_t *lenptr)
+        {
+                return accept(socket, saptr, lenptr);
+        }
+
+        bool HasCreator() { return m_bHasCreate; }
+
+	void OnOptions(int,int,int,SOCKET) {
+		SetSoReuseaddr(true);
+	}
+
+protected:
+	SyncListenSocket(const SyncListenSocket& s) : Socket(s) {}
+private:
+	SyncListenSocket& operator=(const SyncListenSocket& ) { return *this; }
+	int m_depth;
+	X *m_creator;
+	bool m_bHasCreate;
+	Y & y_;
+};
+
+
+
+#ifdef SOCKETS_NAMESPACE
+}
+#endif
+
+#endif // _SOCKETS_SyncListenSocket_H
+