00001 #ifndef CRYPTOPP_SOCKETFT_H
00002 #define CRYPTOPP_SOCKETFT_H
00003
00004 #include "config.h"
00005
00006 #ifdef SOCKETS_AVAILABLE
00007
00008 #include "network.h"
00009 #include "queue.h"
00010
00011 #ifdef USE_WINDOWS_STYLE_SOCKETS
00012 # if defined(_WINSOCKAPI_) && !defined(_WINSOCK2API_)
00013 # error Winsock 1 is not supported by this library. Please include this file or winsock2.h before windows.h.
00014 # endif
00015 #include <winsock2.h>
00016 #include "winpipes.h"
00017 #else
00018 #include <sys/time.h>
00019 #include <sys/types.h>
00020 #include <sys/socket.h>
00021 #include <unistd.h>
00022 #endif
00023
00024 NAMESPACE_BEGIN(CryptoPP)
00025
00026 #ifdef USE_WINDOWS_STYLE_SOCKETS
00027 typedef ::SOCKET socket_t;
00028 #else
00029 typedef int socket_t;
00030 const socket_t INVALID_SOCKET = -1;
00031
00032 const int SD_RECEIVE = 0;
00033 const int SD_SEND = 1;
00034 const int SD_BOTH = 2;
00035 const int SOCKET_ERROR = -1;
00036 #endif
00037
00038 #ifndef socklen_t
00039 typedef TYPE_OF_SOCKLEN_T socklen_t;
00040 #endif
00041
00042
00043 class Socket
00044 {
00045 public:
00046
00047 class Err : public OS_Error
00048 {
00049 public:
00050 Err(socket_t s, const std::string& operation, int error);
00051 socket_t GetSocket() const {return m_s;}
00052
00053 private:
00054 socket_t m_s;
00055 };
00056
00057 Socket(socket_t s = INVALID_SOCKET, bool own=false) : m_s(s), m_own(own) {}
00058 Socket(const Socket &s) : m_s(s.m_s), m_own(false) {}
00059 virtual ~Socket();
00060
00061 bool GetOwnership() const {return m_own;}
00062 void SetOwnership(bool own) {m_own = own;}
00063
00064 operator socket_t() {return m_s;}
00065 socket_t GetSocket() const {return m_s;}
00066 void AttachSocket(socket_t s, bool own=false);
00067 socket_t DetachSocket();
00068 void CloseSocket();
00069
00070 void Create(int nType = SOCK_STREAM);
00071 void Bind(unsigned int port, const char *addr=NULL);
00072 void Bind(const sockaddr* psa, socklen_t saLen);
00073 void Listen(int backlog=5);
00074
00075
00076 bool Connect(const char *addr, unsigned int port);
00077 bool Connect(const sockaddr* psa, socklen_t saLen);
00078 bool Accept(Socket& s, sockaddr *psa=NULL, socklen_t *psaLen=NULL);
00079 void GetSockName(sockaddr *psa, socklen_t *psaLen);
00080 void GetPeerName(sockaddr *psa, socklen_t *psaLen);
00081 unsigned int Send(const byte* buf, size_t bufLen, int flags=0);
00082 unsigned int Receive(byte* buf, size_t bufLen, int flags=0);
00083 void ShutDown(int how = SD_SEND);
00084
00085 void IOCtl(long cmd, unsigned long *argp);
00086 bool SendReady(const timeval *timeout);
00087 bool ReceiveReady(const timeval *timeout);
00088
00089 virtual void HandleError(const char *operation) const;
00090 void CheckAndHandleError_int(const char *operation, int result) const
00091 {if (result == SOCKET_ERROR) HandleError(operation);}
00092 void CheckAndHandleError(const char *operation, socket_t result) const
00093 {if (result == SOCKET_ERROR) HandleError(operation);}
00094 #ifdef USE_WINDOWS_STYLE_SOCKETS
00095 void CheckAndHandleError(const char *operation, BOOL result) const
00096 {assert(result==TRUE || result==FALSE); if (!result) HandleError(operation);}
00097 #endif
00098
00099
00100 static unsigned int PortNameToNumber(const char *name, const char *protocol="tcp");
00101
00102 static void StartSockets();
00103
00104 static void ShutdownSockets();
00105
00106 static int GetLastError();
00107
00108 static void SetLastError(int errorCode);
00109
00110 protected:
00111 virtual void SocketChanged() {}
00112
00113 socket_t m_s;
00114 bool m_own;
00115 };
00116
00117 class SocketsInitializer
00118 {
00119 public:
00120 SocketsInitializer() {Socket::StartSockets();}
00121 ~SocketsInitializer() {try {Socket::ShutdownSockets();} catch (...) {}}
00122 };
00123
00124 class SocketReceiver : public NetworkReceiver
00125 {
00126 public:
00127 SocketReceiver(Socket &s);
00128
00129 #ifdef USE_BERKELEY_STYLE_SOCKETS
00130 bool MustWaitToReceive() {return true;}
00131 #else
00132 ~SocketReceiver();
00133 bool MustWaitForResult() {return true;}
00134 #endif
00135 bool Receive(byte* buf, size_t bufLen);
00136 unsigned int GetReceiveResult();
00137 bool EofReceived() const {return m_eofReceived;}
00138
00139 unsigned int GetMaxWaitObjectCount() const {return 1;}
00140 void GetWaitObjects(WaitObjectContainer &container, CallStack const& callStack);
00141
00142 private:
00143 Socket &m_s;
00144 bool m_eofReceived;
00145
00146 #ifdef USE_WINDOWS_STYLE_SOCKETS
00147 WindowsHandle m_event;
00148 OVERLAPPED m_overlapped;
00149 bool m_resultPending;
00150 DWORD m_lastResult;
00151 #else
00152 unsigned int m_lastResult;
00153 #endif
00154 };
00155
00156 class SocketSender : public NetworkSender
00157 {
00158 public:
00159 SocketSender(Socket &s);
00160
00161 #ifdef USE_BERKELEY_STYLE_SOCKETS
00162 bool MustWaitToSend() {return true;}
00163 #else
00164 ~SocketSender();
00165 bool MustWaitForResult() {return true;}
00166 bool MustWaitForEof() { return true; }
00167 bool EofSent();
00168 #endif
00169 void Send(const byte* buf, size_t bufLen);
00170 unsigned int GetSendResult();
00171 void SendEof();
00172
00173 unsigned int GetMaxWaitObjectCount() const {return 1;}
00174 void GetWaitObjects(WaitObjectContainer &container, CallStack const& callStack);
00175
00176 private:
00177 Socket &m_s;
00178 #ifdef USE_WINDOWS_STYLE_SOCKETS
00179 WindowsHandle m_event;
00180 OVERLAPPED m_overlapped;
00181 bool m_resultPending;
00182 DWORD m_lastResult;
00183 #else
00184 unsigned int m_lastResult;
00185 #endif
00186 };
00187
00188
00189 class SocketSource : public NetworkSource, public Socket
00190 {
00191 public:
00192 SocketSource(socket_t s = INVALID_SOCKET, bool pumpAll = false, BufferedTransformation *attachment = NULL)
00193 : NetworkSource(attachment), Socket(s), m_receiver(*this)
00194 {
00195 if (pumpAll)
00196 PumpAll();
00197 }
00198
00199 private:
00200 NetworkReceiver & AccessReceiver() {return m_receiver;}
00201 SocketReceiver m_receiver;
00202 };
00203
00204
00205 class SocketSink : public NetworkSink, public Socket
00206 {
00207 public:
00208 SocketSink(socket_t s=INVALID_SOCKET, unsigned int maxBufferSize=0, unsigned int autoFlushBound=16*1024)
00209 : NetworkSink(maxBufferSize, autoFlushBound), Socket(s), m_sender(*this) {}
00210
00211 void SendEof() {ShutDown(SD_SEND);}
00212
00213 private:
00214 NetworkSender & AccessSender() {return m_sender;}
00215 SocketSender m_sender;
00216 };
00217
00218 NAMESPACE_END
00219
00220 #endif // #ifdef SOCKETS_AVAILABLE
00221
00222 #endif