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Diffstat (limited to 'src/syncListenSocket.h')
| -rw-r--r-- | src/syncListenSocket.h | 421 |
1 files changed, 421 insertions, 0 deletions
diff --git a/src/syncListenSocket.h b/src/syncListenSocket.h new file mode 100644 index 0000000..2b62bf2 --- /dev/null +++ b/src/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), + m_bHasCreate(false),y_(y) + { + 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 + |