external/ibm-public/postfix/dist/src/global/wildcard_inet_addr.c

   1 /*      $NetBSD$        */
   2
   3 /*++
   4 /* NAME
   5 /*      wildcard_inet_addr 3
   6 /* SUMMARY
   7 /*      expand wild-card address
   8 /* SYNOPSIS
   9 /*      #include <wildcard_inet_addr.h>
  10 /*
  11 /*      INET_ADDR_LIST *wildcard_inet_addr(void)
  12 /* DESCRIPTION
  13 /*      wildcard_inet_addr() determines all wild-card addresses
  14 /*      for all supported address families.
  15 /* DIAGNOSTICS
  16 /*      Fatal errors: out of memory.
  17 /* SEE ALSO
  18 /*      inet_addr_list(3) address list management
  19 /* LICENSE
  20 /* .ad
  21 /* .fi
  22 /*      The Secure Mailer license must be distributed with this software.
  23 /* AUTHOR(S)
  24 /*      Wietse Venema
  25 /*      IBM T.J. Watson Research
  26 /*      P.O. Box 704
  27 /*      Yorktown Heights, NY 10598, USA
  28 /*
  29 /*      Dean C. Strik
  30 /*      Department ICT
  31 /*      Eindhoven University of Technology
  32 /*      P.O. Box 513
  33 /*      5600 MB  Eindhoven, Netherlands
  34 /*      E-mail: <dean@ipnet6.org>
  35 /*--*/
  36
  37 /* System library. */
  38
  39 #include <sys_defs.h>
  40
  41 /* Utility library. */
  42
  43 #include <msg.h>
  44 #include <inet_addr_list.h>
  45 #include <inet_addr_host.h>
  46
  47 /* Global library. */
  48
  49 #include <wildcard_inet_addr.h>
  50
  51 /* Application-specific. */
  52
  53 static INET_ADDR_LIST wild_addr_list;
  54
  55 static void wildcard_inet_addr_init(INET_ADDR_LIST *addr_list)
  56 {
  57     inet_addr_list_init(addr_list);
  58     if (inet_addr_host(addr_list, "") == 0)
  59         msg_fatal("could not get list of wildcard addresses");
  60 }
  61
  62 /* wildcard_inet_addr_list - return list of addresses */
  63
  64 INET_ADDR_LIST *wildcard_inet_addr_list(void)
  65 {
  66     if (wild_addr_list.used == 0)
  67         wildcard_inet_addr_init(&wild_addr_list);
  68
  69     return (&wild_addr_list);
  70 }