resolv/res_hconf.h

   1 /* Copyright (C) 1993, 1995, 1996, 1997 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   SERVICE_NONE = 0,
  28   SERVICE_BIND, SERVICE_HOSTS, SERVICE_NIS,
  29   SERVICE_MAX
  30 };
  31
  32 struct hconf {
  33   int                   num_services;
  34   enum Name_Service     service[SERVICE_MAX];
  35   int                   num_trimdomains;
  36   const char *          trimdomain[TRIMDOMAINS_MAX];
  37   unsigned              flags;
  38 #  define HCONF_FLAG_INITED     (1 << 0) /* initialized? */
  39 #  define HCONF_FLAG_SPOOF      (1 << 1) /* refuse spoofed addresses */
  40 #  define HCONF_FLAG_SPOOFALERT (1 << 2) /* syslog warning of spoofed */
  41 #  define HCONF_FLAG_REORDER    (1 << 3) /* list best address first */
  42 #  define HCONF_FLAG_MULTI      (1 << 4) /* see comments for gethtbyname() */
  43 } _res_hconf;
  44
  45 extern void     _res_hconf_init (void);
  46 extern void     _res_hconf_trim_domain (char * domain);
  47 extern void     _res_hconf_trim_domains (struct hostent * hp);
  48 extern void     _res_hconf_reorder_addrs (struct hostent * hp);
  49
  50 #endif /* _RES_HCONF_H_ */