contrib/bind-9.2.4rc7/lib/bind/irs/gen_p.h

   1 /*
   2  * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
   3  * Copyright (c) 1996,1999 by Internet Software Consortium.
   4  *
   5  * Permission to use, copy, modify, and distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
  10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  11  * MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR
  12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
  15  * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  16  */
  17
  18 /*
  19  * $Id: gen_p.h,v 1.1.2.1 2004/03/09 09:17:29 marka Exp $
  20  */
  21
  22 /* Notes:
  23  *      We hope to create a complete set of thread-safe entry points someday,
  24  *      which will mean a set of getXbyY() functions that take as an argument
  25  *      a pointer to the map class, which will have a pointer to the private
  26  *      data, which will be used preferentially to the static variables that
  27  *      are necessary to support the "classic" interface.  This "classic"
  28  *      interface will then be reimplemented as stubs on top of the thread
  29  *      safe modules, and will keep the map class pointers as their only
  30  *      static data.  HOWEVER, we are not there yet.  So while we will call
  31  *      the just-barely-converted map class methods with map class pointers,
  32  *      right now they probably all still use statics.  We're not fooling
  33  *      anybody, and we're not trying to (yet).
  34  */
  35
  36 #ifndef _GEN_P_H_INCLUDED
  37 #define _GEN_P_H_INCLUDED
  38
  39 /*
  40  * These are the access methods.
  41  */
  42 enum irs_acc_id {
  43         irs_lcl,        /* Local. */
  44         irs_dns,        /* DNS or Hesiod. */
  45         irs_nis,        /* Sun NIS ("YP"). */
  46         irs_irp,        /* IR protocol.  */
  47         irs_nacc
  48 };
  49
  50 /*
  51  * These are the map types.
  52  */
  53 enum irs_map_id {
  54         irs_gr,         /* "group" */
  55         irs_pw,         /* "passwd" */
  56         irs_sv,         /* "services" */
  57         irs_pr,         /* "protocols" */
  58         irs_ho,         /* "hosts" */
  59         irs_nw,         /* "networks" */
  60         irs_ng,         /* "netgroup" */
  61         irs_nmap
  62 };
  63
  64 /*
  65  * This is an accessor instance.
  66  */
  67 struct irs_inst {
  68         struct irs_acc *acc;
  69         struct irs_gr * gr;
  70         struct irs_pw * pw;
  71         struct irs_sv * sv;
  72         struct irs_pr * pr;
  73         struct irs_ho * ho;
  74         struct irs_nw * nw;
  75         struct irs_ng * ng;
  76 };
  77
  78 /*
  79  * This is a search rule for some map type.
  80  */
  81 struct irs_rule {
  82         struct irs_rule *       next;
  83         struct irs_inst *       inst;
  84         int                     flags;
  85 };
  86 #define IRS_MERGE               0x0001  /* Don't stop if acc. has data? */
  87 #define IRS_CONTINUE            0x0002  /* Don't stop if acc. has no data? */
  88
  89 /*
  90  * This is the private data for a search access class.
  91  */
  92 struct gen_p {
  93         char *                  options;
  94         struct irs_rule *       map_rules[(int)irs_nmap];
  95         struct irs_inst         accessors[(int)irs_nacc];
  96         struct __res_state *    res;
  97         void                    (*free_res) __P((void *));
  98 };
  99
 100 /*
 101  * Externs.
 102  */
 103
 104 extern struct irs_acc * irs_gen_acc __P((const char *, const char *conf_file));
 105 extern struct irs_gr *  irs_gen_gr __P((struct irs_acc *));
 106 extern struct irs_pw *  irs_gen_pw __P((struct irs_acc *));
 107 extern struct irs_sv *  irs_gen_sv __P((struct irs_acc *));
 108 extern struct irs_pr *  irs_gen_pr __P((struct irs_acc *));
 109 extern struct irs_ho *  irs_gen_ho __P((struct irs_acc *));
 110 extern struct irs_nw *  irs_gen_nw __P((struct irs_acc *));
 111 extern struct irs_ng *  irs_gen_ng __P((struct irs_acc *));
 112
 113 #endif /*_IRS_P_H_INCLUDED*/