The Tcpdump Group git mirrors - libpcap/blob - pcap/socket.h

   1 /* -*- Mode: c; tab-width: 8; indent-tabs-mode: 1; c-basic-offset: 8; -*- */
   2 /*
   3  * Copyright (c) 1993, 1994, 1995, 1996, 1997
   4  *      The Regents of the University of California.  All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. All advertising materials mentioning features or use of this software
  15  *    must display the following acknowledgement:
  16  *      This product includes software developed by the Computer Systems
  17  *      Engineering Group at Lawrence Berkeley Laboratory.
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  19  *    to endorse or promote products derived from this software without
  20  *    specific prior written permission.
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  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  */
  34
  35 #ifndef lib_pcap_socket_h
  36 #define lib_pcap_socket_h
  37
  38 /*
  39  * Some minor differences between sockets on various platforms.
  40  * We include whatever sockets are needed for Internet-protocol
  41  * socket access on UN*X and Windows.
  42  */
  43 #ifdef _WIN32
  44   /* Need windef.h for defines used in winsock2.h under MingW32 */
  45   #ifdef __MINGW32__
  46     #include <windef.h>
  47   #endif
  48   #include <winsock2.h>
  49   #include <ws2tcpip.h>
  50
  51   /*
  52    * Winsock doesn't have this UN*X type; it's used in the UN*X
  53    * sockets API.
  54    *
  55    * XXX - do we need to worry about UN*Xes so old that *they*
  56    * don't have it, either?
  57    */
  58   typedef int socklen_t;
  59
  60   /*
  61    * Winsock doesn't have this POSIX type; it's used for the
  62    * tv_usec value of struct timeval.
  63    */
  64   typedef long suseconds_t;
  65 #else /* _WIN32 */
  66   #include <sys/types.h>
  67   #include <sys/socket.h>
  68   #include <netdb.h>            /* for struct addrinfo/getaddrinfo() */
  69   #include <netinet/in.h>       /* for sockaddr_in, in BSD at least */
  70   #include <arpa/inet.h>
  71
  72   /*!
  73    * \brief In Winsock, a socket handle is of type SOCKET; in UN*X, it's
  74    * a file descriptor, and therefore a signed integer.
  75    * We define SOCKET to be a signed integer on UN*X, so that it can
  76    * be used on both platforms.
  77    */
  78   #ifndef SOCKET
  79     #define SOCKET int
  80   #endif
  81
  82   /*!
  83    * \brief In Winsock, the error return if socket() fails is INVALID_SOCKET;
  84    * in UN*X, it's -1.
  85    * We define INVALID_SOCKET to be -1 on UN*X, so that it can be used on
  86    * both platforms.
  87    */
  88   #ifndef INVALID_SOCKET
  89     #define INVALID_SOCKET -1
  90   #endif
  91 #endif /* _WIN32 */
  92
  93 #endif /* lib_pcap_socket_h */