cups/getifaddrs-internal.h

   1 /*
   2  * getifaddrs definitions for CUPS.
   3  *
   4  * Copyright 2007-2018 by Apple Inc.
   5  * Copyright 1997-2007 by Easy Software Products, all rights reserved.
   6  *
   7  * Licensed under Apache License v2.0.  See the file "LICENSE" for more
   8  * information.
   9  */
  10
  11 #ifndef _CUPS_GETIFADDRS_INTERNAL_H_
  12 #  define _CUPS_GETIFADDRS_INTERNAL_H_
  13
  14 /*
  15  * Include necessary headers...
  16  */
  17
  18 #  include "config.h"
  19 #  ifdef _WIN32
  20 #    define _WINSOCK_DEPRECATED_NO_WARNINGS 1
  21 #    include <io.h>
  22 #    include <winsock2.h>
  23 #    define CUPS_SOCAST (const char *)
  24 #  else
  25 #    include <unistd.h>
  26 #    include <fcntl.h>
  27 #    include <sys/socket.h>
  28 #    define CUPS_SOCAST
  29 #  endif /* _WIN32 */
  30
  31 #  if defined(__APPLE__) && !defined(_SOCKLEN_T)
  32 /*
  33  * macOS 10.2.x does not define socklen_t, and in fact uses an int instead of
  34  * unsigned type for length values...
  35  */
  36
  37 typedef int socklen_t;
  38 #  endif /* __APPLE__ && !_SOCKLEN_T */
  39
  40 #  ifndef _WIN32
  41 #    include <net/if.h>
  42 #    include <resolv.h>
  43 #    ifdef HAVE_GETIFADDRS
  44 #      include <ifaddrs.h>
  45 #    else
  46 #      include <sys/ioctl.h>
  47 #      ifdef HAVE_SYS_SOCKIO_H
  48 #        include <sys/sockio.h>
  49 #      endif /* HAVE_SYS_SOCKIO_H */
  50 #    endif /* HAVE_GETIFADDRS */
  51 #  endif /* !_WIN32 */
  52
  53
  54 /*
  55  * C++ magic...
  56  */
  57
  58 #  ifdef __cplusplus
  59 extern "C" {
  60 #  endif /* __cplusplus */
  61
  62
  63 /*
  64  * Some OS's don't have getifaddrs() and freeifaddrs()...
  65  */
  66
  67 #  if !defined(_WIN32) && !defined(HAVE_GETIFADDRS)
  68 #    ifdef ifa_dstaddr
  69 #      undef ifa_dstaddr
  70 #    endif /* ifa_dstaddr */
  71 #    ifndef ifr_netmask
  72 #      define ifr_netmask ifr_addr
  73 #    endif /* !ifr_netmask */
  74
  75 struct ifaddrs                          /**** Interface Structure ****/
  76 {
  77   struct ifaddrs        *ifa_next;      /* Next interface in list */
  78   char                  *ifa_name;      /* Name of interface */
  79   unsigned int          ifa_flags;      /* Flags (up, point-to-point, etc.) */
  80   struct sockaddr       *ifa_addr,      /* Network address */
  81                         *ifa_netmask;   /* Address mask */
  82   union
  83   {
  84     struct sockaddr     *ifu_broadaddr; /* Broadcast address of this interface. */
  85     struct sockaddr     *ifu_dstaddr;   /* Point-to-point destination address. */
  86   } ifa_ifu;
  87
  88   void                  *ifa_data;      /* Interface statistics */
  89 };
  90
  91 #    ifndef ifa_broadaddr
  92 #      define ifa_broadaddr ifa_ifu.ifu_broadaddr
  93 #    endif /* !ifa_broadaddr */
  94 #    ifndef ifa_dstaddr
  95 #      define ifa_dstaddr ifa_ifu.ifu_dstaddr
  96 #    endif /* !ifa_dstaddr */
  97
  98 extern int      _cups_getifaddrs(struct ifaddrs **addrs) _CUPS_PRIVATE;
  99 #    define getifaddrs _cups_getifaddrs
 100 extern void     _cups_freeifaddrs(struct ifaddrs *addrs) _CUPS_PRIVATE;
 101 #    define freeifaddrs _cups_freeifaddrs
 102 #  endif /* !_WIN32 && !HAVE_GETIFADDRS */
 103
 104
 105 /*
 106  * C++ magic...
 107  */
 108
 109 #  ifdef __cplusplus
 110 }
 111 #  endif /* __cplusplus */
 112
 113 #endif /* !_CUPS_GETIFADDRS_INTERNAL_H_ */