contrib/bind-9.2.4rc7/lib/dns/include/dns/callbacks.h

   1 /*
   2  * Copyright (C) 2004  Internet Systems Consortium, Inc. ("ISC")
   3  * Copyright (C) 1999-2002  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 WITH
  10  * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
  11  * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
  12  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
  13  * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
  14  * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  15  * PERFORMANCE OF THIS SOFTWARE.
  16  */
  17
  18 /* $Id: callbacks.h,v 1.15.2.3 2004/03/09 06:11:14 marka Exp $ */
  19
  20 #ifndef DNS_CALLBACKS_H
  21 #define DNS_CALLBACKS_H 1
  22
  23 /***
  24  ***    Imports
  25  ***/
  26
  27 #include <isc/lang.h>
  28
  29 #include <dns/types.h>
  30
  31 ISC_LANG_BEGINDECLS
  32
  33 /***
  34  ***    Types
  35  ***/
  36
  37 struct dns_rdatacallbacks {
  38         /*
  39          * dns_load_master calls this when it has rdatasets to commit.
  40          */
  41         dns_addrdatasetfunc_t add;
  42         /*
  43          * dns_load_master / dns_rdata_fromtext call this to issue a error.
  44          */
  45         void    (*error)(struct dns_rdatacallbacks *, const char *, ...);
  46         /*
  47          * dns_load_master / dns_rdata_fromtext call this to issue a warning.
  48          */
  49         void    (*warn)(struct dns_rdatacallbacks *, const char *, ...);
  50         /*
  51          * Private data handles for use by the above callback functions.
  52          */
  53         void    *add_private;
  54         void    *error_private;
  55         void    *warn_private;
  56 };
  57
  58 /***
  59  ***    Initialization
  60  ***/
  61
  62 void
  63 dns_rdatacallbacks_init(dns_rdatacallbacks_t *callbacks);
  64 /*
  65  * Initialize 'callbacks'.
  66  *      'error' and 'warn' are set to default callbacks that print the
  67  *      error message through the DNS library log context.
  68  *
  69  *      All other elements are initialized to NULL.
  70  *
  71  * Requires:
  72  *      'callbacks' is a valid dns_rdatacallbacks_t,
  73  */
  74
  75 void
  76 dns_rdatacallbacks_init_stdio(dns_rdatacallbacks_t *callbacks);
  77 /*
  78  * Like dns_rdatacallbacks_init, but logs to stdio.
  79  */
  80
  81 ISC_LANG_ENDDECLS
  82
  83 #endif /* DNS_CALLBACKS_H */