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 #include <ws2spi.h>
  38 #include <ws2ipdef.h>
  39 #include <ws2tcpip.h>
  40
  41 #define SHUT_RDWR SD_BOTH
  42
  43 #ifndef ETIMEDOUT
  44 #define ETIMEDOUT 138
  45 #endif
  46
  47 namespace PLATFORM
  48 {
  49   #ifndef MSG_WAITALL
  50   #define MSG_WAITALL 0x8
  51   #endif
  52
  53   inline int GetSocketError(void)
  54   {
  55     int error = WSAGetLastError();
  56     switch(error)
  57     {
  58       case WSAEINPROGRESS: return EINPROGRESS;
  59       case WSAECONNRESET : return ECONNRESET;
  60       case WSAETIMEDOUT  : return ETIMEDOUT;
  61       case WSAEWOULDBLOCK: return EAGAIN;
  62       default            : return error;
  63     }
  64   }
  65
  66   // Serial port
  67   //@{
  68   inline void SerialSocketClose(serial_socket_t socket)
  69   {
  70     if (socket != INVALID_HANDLE_VALUE)
  71       CloseHandle(socket);
  72   }
  73
  74   inline ssize_t SerialSocketWrite(serial_socket_t socket, int *iError, void* data, size_t len)
  75   {
  76     if (len != (DWORD)len)
  77     {
  78       *iError = EINVAL;
  79       return -1;
  80     }
  81
  82     DWORD iBytesWritten(0);
  83     if (socket != INVALID_HANDLE_VALUE)
  84     {
  85       if (!WriteFile(socket, data, (DWORD)len, &iBytesWritten, NULL))
  86       {
  87         *iError = GetLastError();
  88         return -1;
  89       }
  90       return (ssize_t)iBytesWritten;
  91     }
  92
  93     return -1;
  94   }
  95
  96   inline ssize_t SerialSocketRead(serial_socket_t socket, int *iError, void* data, size_t len, uint64_t iTimeoutMs /*= 0*/)
  97   {
  98     if (len != (DWORD)len)
  99     {
 100       *iError = EINVAL;
 101       return -1;
 102     }
 103
 104     DWORD iBytesRead(0);
 105     if (socket != INVALID_HANDLE_VALUE)
 106     {
 107       if(!ReadFile(socket, data, (DWORD)len, &iBytesRead, NULL) != 0)
 108       {
 109         *iError = GetLastError();
 110         return -1;
 111       }
 112       return (ssize_t)iBytesRead;
 113     }
 114     return -1;
 115   }
 116   //@}
 117
 118   // TCP
 119   //@{
 120   inline void TcpSocketSetBlocking(tcp_socket_t socket, bool bSetTo)
 121   {
 122     u_long iSetTo = bSetTo ? 0 : 1;
 123     ioctlsocket(socket, FIONBIO, &iSetTo);
 124   }
 125
 126   inline void TcpSocketClose(tcp_socket_t socket)
 127   {
 128     closesocket(socket);
 129   }
 130
 131   inline void TcpSocketShutdown(tcp_socket_t socket)
 132   {
 133     if (socket != INVALID_SOCKET &&
 134         socket != SOCKET_ERROR)
 135       shutdown(socket, SHUT_RDWR);
 136   }
 137
 138   inline ssize_t TcpSocketWrite(tcp_socket_t socket, int *iError, void* data, size_t len)
 139   {
 140     if (socket == INVALID_SOCKET ||
 141         socket == SOCKET_ERROR ||
 142         len != (int)len)
 143     {
 144       *iError = EINVAL;
 145       return -1;
 146     }
 147
 148     ssize_t iReturn = send(socket, (char*)data, (int)len, 0);
 149     if (iReturn < (ssize_t)len)
 150       *iError = GetSocketError();
 151     return iReturn;
 152   }
 153
 154   inline ssize_t TcpSocketRead(tcp_socket_t socket, int *iError, void* data, size_t len, uint64_t iTimeoutMs /*= 0*/)
 155   {
 156     int64_t iNow(0), iTarget(0);
 157     ssize_t iBytesRead(0);
 158     *iError = 0;
 159
 160     if (socket == INVALID_SOCKET ||
 161         socket == SOCKET_ERROR ||
 162         len != (int)len)
 163     {
 164       *iError = EINVAL;
 165       return -1;
 166     }
 167
 168     if (iTimeoutMs > 0)
 169     {
 170       iNow    = GetTimeMs();
 171       iTarget = iNow + (int64_t) iTimeoutMs;
 172     }
 173
 174     fd_set fd_read;
 175     struct timeval tv;
 176     while (iBytesRead >= 0 && iBytesRead < (ssize_t)len && (iTimeoutMs == 0 || iTarget > iNow))
 177     {
 178       if (iTimeoutMs > 0)
 179       {
 180         tv.tv_sec  =        (long)(iTimeoutMs / 1000);
 181         tv.tv_usec = 1000 * (long)(iTimeoutMs % 1000);
 182
 183         FD_ZERO(&fd_read);
 184         FD_SET(socket, &fd_read);
 185
 186         if (select((int)socket + 1, &fd_read, NULL, NULL, &tv) == 0)
 187         {
 188           *iError = ETIMEDOUT;
 189           return ETIMEDOUT;
 190         }
 191         TcpSocketSetBlocking(socket, false);
 192       }
 193
 194       ssize_t iReadResult = (iTimeoutMs > 0) ?
 195           recv(socket, (char*)data + iBytesRead, (int)(len - iBytesRead), 0) :
 196           recv(socket, (char*)data, (int)len, MSG_WAITALL);
 197       *iError = GetSocketError();
 198
 199       if (iTimeoutMs > 0)
 200       {
 201         TcpSocketSetBlocking(socket, true);
 202         iNow = GetTimeMs();
 203       }
 204
 205       if (iReadResult < 0)
 206       {
 207         if (*iError == EAGAIN && iTimeoutMs > 0)
 208           continue;
 209         return -1;
 210       }
 211       else if (iReadResult == 0 || (iReadResult != (ssize_t)len && iTimeoutMs == 0))
 212       {
 213         *iError = ECONNRESET;
 214         return -1;
 215       }
 216
 217       iBytesRead += iReadResult;
 218     }
 219
 220     if (iBytesRead < (ssize_t)len && *iError == 0)
 221       *iError = ETIMEDOUT;
 222
 223     return iBytesRead;
 224   }
 225
 226   inline bool TcpResolveAddress(const char *strHost, uint16_t iPort, int *iError, struct addrinfo **info)
 227   {
 228     struct   addrinfo hints;
 229     char     service[33];
 230     memset(&hints, 0, sizeof(hints));
 231     hints.ai_family   = AF_UNSPEC;
 232     hints.ai_socktype = SOCK_STREAM;
 233     hints.ai_protocol = IPPROTO_TCP;
 234     sprintf(service, "%d", iPort);
 235
 236     *iError = getaddrinfo(strHost, service, &hints, info);
 237     return !(*iError);
 238   }
 239
 240   inline int TcpGetSocketError(tcp_socket_t socket)
 241   {
 242     int iReturn(0);
 243     socklen_t optLen = sizeof(tcp_socket_t);
 244     getsockopt(socket, SOL_SOCKET, SO_ERROR, (char *)&iReturn, &optLen);
 245     return iReturn;
 246   }
 247
 248   inline bool TcpSetNoDelay(tcp_socket_t socket)
 249   {
 250     int iSetTo(1);
 251     setsockopt(socket, IPPROTO_TCP, TCP_NODELAY, (const char*)&iSetTo, sizeof(iSetTo));
 252     return true;
 253   }
 254
 255   inline bool TcpConnectSocket(tcp_socket_t socket, struct addrinfo* addr, int *iError, uint64_t iTimeout = 0)
 256   {
 257     TcpSocketSetBlocking(socket, false);
 258
 259     *iError = 0;
 260     int iConnectResult = connect(socket, addr->ai_addr, (int)addr->ai_addrlen);
 261     if (iConnectResult == -1)
 262     {
 263       if (GetSocketError() == EINPROGRESS ||
 264           GetSocketError() == EAGAIN)
 265       {
 266         fd_set fd_write, fd_except;
 267         struct timeval tv;
 268         tv.tv_sec  =        (long)(iTimeout / 1000);
 269         tv.tv_usec = 1000 * (long)(iTimeout % 1000);
 270
 271         FD_ZERO(&fd_write);
 272         FD_ZERO(&fd_except);
 273         FD_SET(socket, &fd_write);
 274         FD_SET(socket, &fd_except);
 275
 276         int iPollResult = select(sizeof(socket)*8, NULL, &fd_write, &fd_except, &tv);
 277         if (iPollResult == 0)
 278           *iError = ETIMEDOUT;
 279         else if (iPollResult == -1)
 280           *iError = GetSocketError();
 281         else
 282         {
 283           socklen_t errlen = sizeof(int);
 284           getsockopt(socket, SOL_SOCKET, SO_ERROR, (char *)iError, &errlen);
 285         }
 286       }
 287       else
 288       {
 289         *iError = GetSocketError();
 290       }
 291     }
 292
 293     TcpSocketSetBlocking(socket, true);
 294
 295     return *iError == 0;
 296   }
 297 }