wildcard_inet_addr.c

[詳解]

/*++
/* NAME
/*  wildcard_inet_addr 3
/* SUMMARY
/*  expand wild-card address
/* SYNOPSIS
/*  #include <wildcard_inet_addr.h>
/*
/*  INET_ADDR_LIST *wildcard_inet_addr(void)
/* DESCRIPTION
/*  wildcard_inet_addr() determines all wild-card addresses
/*  for all supported address families.
/* DIAGNOSTICS
/*  Fatal errors: out of memory.
/* SEE ALSO
/*  inet_addr_list(3) address list management
/* LICENSE
/* .ad
/* .fi
/*  The Secure Mailer license must be distributed with this software.
/* AUTHOR(S)
/*  Wietse Venema
/*  IBM T.J. Watson Research
/*  P.O. Box 704
/*  Yorktown Heights, NY 10598, USA
/*
/*  Dean C. Strik
/*  Department ICT
/*  Eindhoven University of Technology
/*  P.O. Box 513
/*  5600 MB  Eindhoven, Netherlands
/*  E-mail: <dean@ipnet6.org>
/*--*/

/* System library. */

#include <sys_defs.h>

/* Utility library. */

#include <msg.h>
#include <inet_addr_list.h>
#include <inet_addr_host.h>

/* Global library. */

#include <wildcard_inet_addr.h>

/* Application-specific. */

static INET_ADDR_LIST wild_addr_list;

static void wildcard_inet_addr_init(INET_ADDR_LIST *addr_list)
{
    inet_addr_list_init(addr_list);
    if (inet_addr_host(addr_list, "") == 0)
    msg_fatal("could not get list of wildcard addresses");
}

/* wildcard_inet_addr_list - return list of addresses */

INET_ADDR_LIST *wildcard_inet_addr_list(void)
{
    if (wild_addr_list.used == 0)
    wildcard_inet_addr_init(&wild_addr_list);

    return (&wild_addr_list);
}