Line data    Source code

       1             : /* FreeTDS - Library of routines accessing Sybase and Microsoft databases
       2             :  * Copyright (C) 2018  Ziglio Frediano
       3             :  *
       4             :  * This library is free software; you can redistribute it and/or
       5             :  * modify it under the terms of the GNU Library General Public
       6             :  * License as published by the Free Software Foundation; either
       7             :  * version 2 of the License, or (at your option) any later version.
       8             :  *
       9             :  * This library is distributed in the hope that it will be useful,
      10             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      11             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      12             :  * Library General Public License for more details.
      13             :  *
      14             :  * You should have received a copy of the GNU Library General Public
      15             :  * License along with this library; if not, write to the
      16             :  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
      17             :  * Boston, MA 02111-1307, USA.
      18             :  */
      19             : 
      20             : #include <config.h>
      21             : 
      22             : #include <stdio.h>
      23             : 
      24             : #if HAVE_SYS_TYPES_H
      25             : #include <sys/types.h>
      26             : #endif /* HAVE_SYS_TYPES_H */
      27             : 
      28             : #if HAVE_ERRNO_H
      29             : #include <errno.h>
      30             : #endif /* HAVE_ERRNO_H */
      31             : 
      32             : #if HAVE_UNISTD_H
      33             : #include <unistd.h>
      34             : #endif /* HAVE_UNISTD_H */
      35             : 
      36             : #if HAVE_STDLIB_H
      37             : #include <stdlib.h>
      38             : #endif /* HAVE_STDLIB_H */
      39             : 
      40             : #if HAVE_SYS_SOCKET_H
      41             : #include <sys/socket.h>
      42             : #endif /* HAVE_SYS_SOCKET_H */
      43             : 
      44             : #if HAVE_NETINET_IN_H
      45             : #include <netinet/in.h>
      46             : #endif /* HAVE_NETINET_IN_H */
      47             : 
      48             : #if HAVE_NETINET_TCP_H
      49             : #include <netinet/tcp.h>
      50             : #endif /* HAVE_NETINET_TCP_H */
      51             : 
      52             : #ifdef _WIN32
      53             : #include <winsock2.h>
      54             : #include <ws2tcpip.h>
      55             : #include <mstcpip.h>
      56             : #endif
      57             : 
      58             : #include <freetds/utils.h>
      59             : #include <freetds/utils/nosigpipe.h>
      60             : #include <freetds/macros.h>
      61             : 
      62             : #if !defined(SOL_TCP) && (defined(IPPROTO_TCP) || defined(_WIN32))
      63             : /* fix incompatibility between MS headers */
      64             : # ifndef IPPROTO_TCP
      65             : #  define IPPROTO_TCP IPPROTO_TCP
      66             : # endif
      67             : # define SOL_TCP IPPROTO_TCP
      68             : #endif
      69             : 
      70             : /* under VMS we have to define TCP_NODELAY */
      71             : #if defined(__VMS) && !defined(TCP_NODELAY)
      72             : #define TCP_NODELAY 1
      73             : #endif
      74             : 
      75             : /**
      76             :  * \addtogroup network
      77             :  * @{
      78             :  */
      79             : 
      80             : /**
      81             :  * Set socket to not throw SIGPIPE.
      82             :  * Not many systems support this feature (in this case ENOTSUP can be
      83             :  * returned).
      84             :  * @param sock socket to set
      85             :  * @param on   flag if enable or disable
      86             :  * @return 0 on success or error code
      87             :  */
      88             : int
      89         140 : tds_socket_set_nosigpipe(TDS_SYS_SOCKET sock TDS_UNUSED, int on TDS_UNUSED)
      90             : {
      91             : #if defined(SO_NOSIGPIPE)
      92             :         if (setsockopt(sock, SOL_SOCKET, SO_NOSIGPIPE, (const void *) &on, sizeof(on)))
      93             :                 return sock_errno;
      94             :         return 0;
      95             : #elif defined(_WIN32)
      96             :         return 0;
      97             : #else
      98         140 :         return on ? ENOTSUP : 0;
      99             : #endif
     100             : }
     101             : 
     102             : int
     103         752 : tds_socket_set_nodelay(TDS_SYS_SOCKET sock)
     104             : {
     105         752 :         int on = 1;
     106             : 
     107         752 :         if (setsockopt(sock, SOL_TCP, TCP_NODELAY, (const void *) &on, sizeof(on)))
     108           0 :                 return sock_errno;
     109             :         return 0;
     110             : }
     111             : 
     112             : /** @} */
     113             :