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 void CheckAndHandleError(const char *operation, bool result) const
00098 {if (!result) HandleError(operation);}
00099 #endif
00100
00101
00102 static unsigned int PortNameToNumber(const char *name, const char *protocol="tcp");
00103
00104 static void StartSockets();
00105
00106 static void ShutdownSockets();
00107
00108 static int GetLastError();
00109
00110 static void SetLastError(int errorCode);
00111
00112 protected:
00113 virtual void SocketChanged() {}
00114
00115 socket_t m_s;
00116 bool m_own;
00117 };
00118
00119 class SocketsInitializer
00120 {
00121 public:
00122 SocketsInitializer() {Socket::StartSockets();}
00123 ~SocketsInitializer() {try {Socket::ShutdownSockets();} catch (...) {}}
00124 };
00125
00126 class SocketReceiver : public NetworkReceiver
00127 {
00128 public:
00129 SocketReceiver(Socket &s);
00130
00131 #ifdef USE_BERKELEY_STYLE_SOCKETS
00132 bool MustWaitToReceive() {return true;}
00133 #else
00134 ~SocketReceiver();
00135 bool MustWaitForResult() {return true;}
00136 #endif
00137 bool Receive(byte* buf, size_t bufLen);
00138 unsigned int GetReceiveResult();
00139 bool EofReceived() const {return m_eofReceived;}
00140
00141 unsigned int GetMaxWaitObjectCount() const {return 1;}
00142 void GetWaitObjects(WaitObjectContainer &container, CallStack const& callStack);
00143
00144 private:
00145 Socket &m_s;
00146 bool m_eofReceived;
00147
00148 #ifdef USE_WINDOWS_STYLE_SOCKETS
00149 WindowsHandle m_event;
00150 OVERLAPPED m_overlapped;
00151 bool m_resultPending;
00152 DWORD m_lastResult;
00153 #else
00154 unsigned int m_lastResult;
00155 #endif
00156 };
00157
00158 class SocketSender : public NetworkSender
00159 {
00160 public:
00161 SocketSender(Socket &s);
00162
00163 #ifdef USE_BERKELEY_STYLE_SOCKETS
00164 bool MustWaitToSend() {return true;}
00165 #else
00166 ~SocketSender();
00167 bool MustWaitForResult() {return true;}
00168 bool MustWaitForEof() { return true; }
00169 bool EofSent();
00170 #endif
00171 void Send(const byte* buf, size_t bufLen);
00172 unsigned int GetSendResult();
00173 void SendEof();
00174
00175 unsigned int GetMaxWaitObjectCount() const {return 1;}
00176 void GetWaitObjects(WaitObjectContainer &container, CallStack const& callStack);
00177
00178 private:
00179 Socket &m_s;
00180 #ifdef USE_WINDOWS_STYLE_SOCKETS
00181 WindowsHandle m_event;
00182 OVERLAPPED m_overlapped;
00183 bool m_resultPending;
00184 DWORD m_lastResult;
00185 #else
00186 unsigned int m_lastResult;
00187 #endif
00188 };
00189
00190
00191 class SocketSource : public NetworkSource, public Socket
00192 {
00193 public:
00194 SocketSource(socket_t s = INVALID_SOCKET, bool pumpAll = false, BufferedTransformation *attachment = NULL)
00195 : NetworkSource(attachment), Socket(s), m_receiver(*this)
00196 {
00197 if (pumpAll)
00198 PumpAll();
00199 }
00200
00201 private:
00202 NetworkReceiver & AccessReceiver() {return m_receiver;}
00203 SocketReceiver m_receiver;
00204 };
00205
00206
00207 class SocketSink : public NetworkSink, public Socket
00208 {
00209 public:
00210 SocketSink(socket_t s=INVALID_SOCKET, unsigned int maxBufferSize=0, unsigned int autoFlushBound=16*1024)
00211 : NetworkSink(maxBufferSize, autoFlushBound), Socket(s), m_sender(*this) {}
00212
00213 void SendEof() {ShutDown(SD_SEND);}
00214
00215 private:
00216 NetworkSender & AccessSender() {return m_sender;}
00217 SocketSender m_sender;
00218 };
00219
00220 NAMESPACE_END
00221
00222 #endif // #ifdef SOCKETS_AVAILABLE
00223
00224 #endif