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curl

    1: /***************************************************************************
    2:  *                                  _   _ ____  _
    3:  *  Project                     ___| | | |  _ \| |
    4:  *                             / __| | | | |_) | |
    5:  *                            | (__| |_| |  _ <| |___
    6:  *                             \___|\___/|_| \_\_____|
    7:  *
    8:  * Copyright (C) 1998 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al.
    9:  *
   10:  * This software is licensed as described in the file COPYING, which
   11:  * you should have received as part of this distribution. The terms
   12:  * are also available at https://curl.haxx.se/docs/copyright.html.
   13:  *
   14:  * You may opt to use, copy, modify, merge, publish, distribute and/or sell
   15:  * copies of the Software, and permit persons to whom the Software is
   16:  * furnished to do so, under the terms of the COPYING file.
   17:  *
   18:  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
   19:  * KIND, either express or implied.
   20:  *
   21:  ***************************************************************************/
   22: 
   23: #include "curl_setup.h"
   24: 
   25: #ifdef HAVE_SYS_IOCTL_H
   26: #include <sys/ioctl.h>
   27: #endif
   28: #ifdef HAVE_FCNTL_H
   29: #include <fcntl.h>
   30: #endif
   31: 
   32: #if (defined(HAVE_IOCTL_FIONBIO) && defined(NETWARE))
   33: #include <sys/filio.h>
   34: #endif
   35: #ifdef __VMS
   36: #include <in.h>
   37: #include <inet.h>
   38: #endif
   39: 
   40: #include "nonblock.h"
   41: 
   42: /*
   43:  * curlx_nonblock() set the given socket to either blocking or non-blocking
   44:  * mode based on the 'nonblock' boolean argument. This function is highly
   45:  * portable.
   46:  */
   47: int curlx_nonblock(curl_socket_t sockfd,    /* operate on this */
   48:                    int nonblock   /* TRUE or FALSE */)
   49: {
   50: #if defined(USE_BLOCKING_SOCKETS)
   51:   (void)sockfd;
   52:   (void)nonblock;
   53:   return 0; /* returns success */
   54: 
   55: #elif defined(HAVE_FCNTL_O_NONBLOCK)
   56: 
   57:   /* most recent unix versions */
   58:   int flags;
   59:   flags = sfcntl(sockfd, F_GETFL, 0);
   60:   if(nonblock)
   61:     return sfcntl(sockfd, F_SETFL, flags | O_NONBLOCK);
   62:   return sfcntl(sockfd, F_SETFL, flags & (~O_NONBLOCK));
   63: 
   64: #elif defined(HAVE_IOCTL_FIONBIO)
   65: 
   66:   /* older unix versions */
   67:   int flags = nonblock ? 1 : 0;
   68:   return ioctl(sockfd, FIONBIO, &flags);
   69: 
   70: #elif defined(HAVE_IOCTLSOCKET_FIONBIO)
   71: 
   72:   /* Windows */
   73:   unsigned long flags = nonblock ? 1UL : 0UL;
   74:   return ioctlsocket(sockfd, FIONBIO, &flags);
   75: 
   76: #elif defined(HAVE_IOCTLSOCKET_CAMEL_FIONBIO)
   77: 
   78:   /* Amiga */
   79:   long flags = nonblock ? 1L : 0L;
   80:   return IoctlSocket(sockfd, FIONBIO, (char *)&flags);
   81: 
   82: #elif defined(HAVE_SETSOCKOPT_SO_NONBLOCK)
   83: 
   84:   /* BeOS */
   85:   long b = nonblock ? 1L : 0L;
   86:   return setsockopt(sockfd, SOL_SOCKET, SO_NONBLOCK, &b, sizeof(b));
   87: 
   88: #else
   89: #  error "no non-blocking method was found/used/set"
   90: #endif
   91: }