resolv/res_hconf.h

   1 /* Copyright (C) 1993, 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
   2    Contributed by David Mosberger (davidm@azstarnet.com).
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Library General Public License as
   6    published by the Free Software Foundation; either version 2 of the
   7    License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Library General Public License for more details.
  13
  14    You should have received a copy of the GNU Library General Public
  15    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  16    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17    Boston, MA 02111-1307, USA.  */
  18
  19 #ifndef _RES_HCONF_H_
  20 #define _RES_HCONF_H_
  21
  22 #include <netdb.h>
  23
  24 #define TRIMDOMAINS_MAX 4
  25
  26 enum Name_Service
  27 {
  28   SERVICE_NONE = 0,
  29   SERVICE_BIND, SERVICE_HOSTS, SERVICE_NIS,
  30   SERVICE_MAX
  31 };
  32
  33 struct hconf
  34 {
  35   int initialized;
  36   int num_services;
  37   enum Name_Service service[SERVICE_MAX];
  38   int num_trimdomains;
  39   const char *trimdomain[TRIMDOMAINS_MAX];
  40   unsigned int flags;
  41 #  define HCONF_FLAG_INITED     (1 << 0) /* initialized? */
  42 #  define HCONF_FLAG_SPOOF      (1 << 1) /* refuse spoofed addresses */
  43 #  define HCONF_FLAG_SPOOFALERT (1 << 2) /* syslog warning of spoofed */
  44 #  define HCONF_FLAG_REORDER    (1 << 3) /* list best address first */
  45 #  define HCONF_FLAG_MULTI      (1 << 4) /* see comments for gethtbyname() */
  46 };
  47 extern struct hconf _res_hconf;
  48
  49 extern void _res_hconf_init (void);
  50 extern void _res_hconf_trim_domain (char *domain);
  51 extern void _res_hconf_trim_domains (struct hostent *hp);
  52 extern void _res_hconf_reorder_addrs (struct hostent *hp);
  53
  54 #endif /* _RES_HCONF_H_ */