src/lib/platform/windows/os-socket.h

   1 #pragma once
   2 /*
   3  * This file is part of the libCEC(R) library.
   4  *
   5  * libCEC(R) is Copyright (C) 2011-2012 Pulse-Eight Limited.  All rights reserved.
   6  * libCEC(R) is an original work, containing original code.
   7  *
   8  * libCEC(R) is a trademark of Pulse-Eight Limited.
   9  *
  10  * This program is dual-licensed; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  23  *
  24  *
  25  * Alternatively, you can license this library under a commercial license,
  26  * please contact Pulse-Eight Licensing for more information.
  27  *
  28  * For more information contact:
  29  * Pulse-Eight Licensing       <license@pulse-eight.com>
  30  *     http://www.pulse-eight.com/
  31  *     http://www.pulse-eight.net/
  32  */
  33
  34 #include "../os.h"
  35 #include "../util/timeutils.h"
  36
  37 #pragma comment(lib, "Ws2_32.lib")
  38 #include <ws2spi.h>
  39 #include <ws2ipdef.h>
  40 #include <ws2tcpip.h>
  41
  42 #define SHUT_RDWR SD_BOTH
  43
  44 #ifndef ETIMEDOUT
  45 #define ETIMEDOUT 138
  46 #endif
  47
  48 namespace PLATFORM
  49 {
  50   #ifndef MSG_WAITALL
  51   #define MSG_WAITALL 0x8
  52   #endif
  53
  54   inline int GetSocketError(void)
  55   {
  56     int error = WSAGetLastError();
  57     switch(error)
  58     {
  59       case WSAEINPROGRESS: return EINPROGRESS;
  60       case WSAECONNRESET : return ECONNRESET;
  61       case WSAETIMEDOUT  : return ETIMEDOUT;
  62       case WSAEWOULDBLOCK: return EAGAIN;
  63       default            : return error;
  64     }
  65   }
  66
  67   // Serial port
  68   //@{
  69   inline void SerialSocketClose(serial_socket_t socket)
  70   {
  71     if (socket != INVALID_HANDLE_VALUE)
  72       CloseHandle(socket);
  73   }
  74
  75   inline ssize_t SerialSocketWrite(serial_socket_t socket, int *iError, void* data, size_t len)
  76   {
  77     DWORD iBytesWritten(0);
  78     if (socket != INVALID_HANDLE_VALUE)
  79     {
  80       if (!WriteFile(socket, data, len, &iBytesWritten, NULL))
  81       {
  82         *iError = GetLastError();
  83         return -1;
  84       }
  85       return (ssize_t)iBytesWritten;
  86     }
  87
  88     return -1;
  89   }
  90
  91   inline ssize_t SerialSocketRead(serial_socket_t socket, int *iError, void* data, size_t len, uint64_t iTimeoutMs /*= 0*/)
  92   {
  93     DWORD iBytesRead(0);
  94     if (socket != INVALID_HANDLE_VALUE)
  95     {
  96       if(!ReadFile(socket, data, len, &iBytesRead, NULL) != 0)
  97       {
  98         *iError = GetLastError();
  99         return -1;
 100       }
 101       return (ssize_t)iBytesRead;
 102     }
 103     return -1;
 104   }
 105   //@}
 106
 107   // TCP
 108   //@{
 109   inline void TcpSocketSetBlocking(tcp_socket_t socket, bool bSetTo)
 110   {
 111     u_long iSetTo = bSetTo ? 0 : 1;
 112     ioctlsocket(socket, FIONBIO, &iSetTo);
 113   }
 114
 115   inline void TcpSocketClose(tcp_socket_t socket)
 116   {
 117     closesocket(socket);
 118   }
 119
 120   inline void TcpSocketShutdown(tcp_socket_t socket)
 121   {
 122     if (socket != INVALID_SOCKET &&
 123         socket != SOCKET_ERROR)
 124       shutdown(socket, SHUT_RDWR);
 125   }
 126
 127   inline ssize_t TcpSocketWrite(tcp_socket_t socket, int *iError, void* data, size_t len)
 128   {
 129     if (socket == INVALID_SOCKET ||
 130         socket == SOCKET_ERROR)
 131     {
 132       *iError = EINVAL;
 133       return -1;
 134     }
 135
 136     ssize_t iReturn = send(socket, (char*)data, len, 0);
 137     if (iReturn < (ssize_t)len)
 138       *iError = errno;
 139     return iReturn;
 140   }
 141
 142   inline ssize_t TcpSocketRead(tcp_socket_t socket, int *iError, void* data, size_t len, uint64_t iTimeoutMs /*= 0*/)
 143   {
 144     int64_t iNow(0), iTarget(0);
 145     ssize_t iBytesRead(0);
 146     *iError = 0;
 147
 148     if (socket == INVALID_SOCKET ||
 149         socket == SOCKET_ERROR)
 150     {
 151       *iError = EINVAL;
 152       return -1;
 153     }
 154
 155     if (iTimeoutMs > 0)
 156     {
 157       iNow    = GetTimeMs();
 158       iTarget = iNow + (int64_t) iTimeoutMs;
 159     }
 160
 161     fd_set fd_read;
 162     struct timeval tv;
 163     while (iBytesRead >= 0 && iBytesRead < (ssize_t)len && (iTimeoutMs == 0 || iTarget > iNow))
 164     {
 165       if (iTimeoutMs > 0)
 166       {
 167         tv.tv_sec  =        (long)(iTimeoutMs / 1000);
 168         tv.tv_usec = 1000 * (long)(iTimeoutMs % 1000);
 169
 170         FD_ZERO(&fd_read);
 171         FD_SET(socket, &fd_read);
 172
 173         if (select(socket + 1, &fd_read, NULL, NULL, &tv) == 0)
 174           return ETIMEDOUT;
 175         TcpSocketSetBlocking(socket, false);
 176       }
 177
 178       ssize_t iReadResult = (iTimeoutMs > 0) ?
 179           recv(socket, (char*)data + iBytesRead, len - iBytesRead, MSG_WAITALL) :
 180           recv(socket, (char*)data, len, MSG_WAITALL);
 181       *iError = GetSocketError();
 182       if (iReadResult < 0)
 183       {
 184         if (errno == EAGAIN && iTimeoutMs > 0)
 185           continue;
 186         *iError = errno;
 187         return -1;
 188       }
 189       else if (iReadResult == 0 || (iReadResult != (ssize_t)len && iTimeoutMs == 0))
 190       {
 191         *iError = ECONNRESET;
 192         return -1;
 193       }
 194
 195       iBytesRead += iReadResult;
 196
 197       if (iTimeoutMs > 0)
 198       {
 199         TcpSocketSetBlocking(socket, true);
 200         iNow = GetTimeMs();
 201       }
 202     }
 203     return 0;
 204   }
 205
 206   inline bool TcpResolveAddress(const char *strHost, uint16_t iPort, int *iError, struct addrinfo **info)
 207   {
 208     struct   addrinfo hints;
 209     char     service[33];
 210     memset(&hints, 0, sizeof(hints));
 211     hints.ai_family   = AF_UNSPEC;
 212     hints.ai_socktype = SOCK_STREAM;
 213     hints.ai_protocol = IPPROTO_TCP;
 214     sprintf(service, "%d", iPort);
 215
 216     *iError = getaddrinfo(strHost, service, &hints, info);
 217     return !(*iError);
 218   }
 219
 220   inline int TcpGetSocketError(tcp_socket_t socket)
 221   {
 222     int iReturn(0);
 223     socklen_t optLen = sizeof(tcp_socket_t);
 224     getsockopt(socket, SOL_SOCKET, SO_ERROR, (char *)&iReturn, &optLen);
 225     return iReturn;
 226   }
 227
 228   inline bool TcpSetNoDelay(tcp_socket_t socket)
 229   {
 230     int iSetTo(1);
 231     setsockopt(socket, IPPROTO_TCP, TCP_NODELAY, (const char*)&iSetTo, sizeof(iSetTo));
 232     return true;
 233   }
 234
 235   inline bool TcpConnectSocket(tcp_socket_t socket, struct addrinfo* addr, int *iError, uint64_t iTimeout = 0)
 236   {
 237     TcpSocketSetBlocking(socket, false);
 238
 239     *iError = 0;
 240     int iConnectResult = connect(socket, addr->ai_addr, addr->ai_addrlen);
 241     if (iConnectResult == -1)
 242     {
 243       if (GetSocketError() == EINPROGRESS ||
 244           GetSocketError() == EAGAIN)
 245       {
 246         fd_set fd_write, fd_except;
 247         struct timeval tv;
 248         tv.tv_sec  =        (long)(iTimeout / 1000);
 249         tv.tv_usec = 1000 * (long)(iTimeout % 1000);
 250
 251         FD_ZERO(&fd_write);
 252         FD_ZERO(&fd_except);
 253         FD_SET(socket, &fd_write);
 254         FD_SET(socket, &fd_except);
 255
 256         int iPollResult = select(sizeof(socket)*8, NULL, &fd_write, &fd_except, &tv);
 257         if (iPollResult == 0)
 258           *iError = ETIMEDOUT;
 259         else if (iPollResult == -1)
 260           *iError = GetSocketError();
 261         else
 262         {
 263           socklen_t errlen = sizeof(int);
 264           getsockopt(socket, SOL_SOCKET, SO_ERROR, (char *)iError, &errlen);
 265         }
 266       }
 267       else
 268       {
 269         *iError = errno;
 270       }
 271     }
 272
 273     TcpSocketSetBlocking(socket, true);
 274
 275     return *iError == 0;
 276   }
 277 }