dist/ntp/sntp/internet.h

   1 /*      $NetBSD: internet.h,v 1.2 2003/12/04 16:23:38 drochner Exp $    */
   2
   3 /*  Copyright (C) 1996 N.M. Maclaren
   4     Copyright (C) 1996 The University of Cambridge
   5
   6 This includes all of the 'Internet' headers and definitions used across
   7 modules, including those for handling timeouts.  No changes should be needed
   8 for any version of Unix with Internet (IP version 5) addressing, but would be
   9 for other addressing domains.  It needs <sys/socket.h> only because AF_INET is
  10 needed by gethostbyaddr and is defined there rather than in <netdb.h>, for some
  11 damn-fool reason. */
  12
  13
  14
  15 #include <setjmp.h>
  16 #include <signal.h>
  17
  18 #include <unistd.h>
  19 #include <sys/types.h>
  20 #include <netinet/in.h>
  21 #include <sys/socket.h>
  22
  23
  24
  25 /* It is most unclear whether these should be here or in kludges.h, as they are
  26 kludges to keep 32-bit address dependencies out of the main body of internet.c,
  27 to allow for the much heralded arrival of IP version 6.  It will be interesting
  28 to see whether the universal availability of 64-bit integers arrives first. */
  29
  30 #define local_to_address(x,y) ((x)->s_addr = htonl((unsigned long)y))
  31 #define network_to_address(x,y) ((x)->s_addr = (y))
  32
  33 #define NTP_PORT htons((unsigned short)123)    /* If not in /etc/services */
  34 #define port_to_integer(x) (ntohs((unsigned short)(x)))
  35
  36
  37 #if defined(_SS_MAXSIZE) || defined(_SS_SIZE)
  38 #define HAVE_IPV6
  39 #endif
  40
  41 /* Defined in internet.c */
  42 #ifdef HAVE_IPV6
  43 extern void find_address (struct sockaddr_storage *address,
  44     struct sockaddr_storage *anywhere,
  45     int *port, char *hostname, int timespan);
  46 #else
  47 extern void find_address (struct in_addr *address, struct in_addr *anywhere,
  48     int *port, char *hostname, int timespan);
  49 #endif