contrib/bind-9.5.2/lib/dns/include/dns/callbacks.h

   1 /*
   2  * Copyright (C) 2004-2007  Internet Systems Consortium, Inc. ("ISC")
   3  * Copyright (C) 1999-2002  Internet Software Consortium.
   4  *
   5  * Permission to use, copy, modify, and/or 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 1.24 2007/06/19 23:47:16 tbox Exp $ */
  19
  20 #ifndef DNS_CALLBACKS_H
  21 #define DNS_CALLBACKS_H 1
  22
  23 /*! \file dns/callbacks.h */
  24
  25 /***
  26  ***    Imports
  27  ***/
  28
  29 #include <isc/lang.h>
  30
  31 #include <dns/types.h>
  32
  33 ISC_LANG_BEGINDECLS
  34
  35 /***
  36  ***    Types
  37  ***/
  38
  39 struct dns_rdatacallbacks {
  40         /*%
  41          * dns_load_master calls this when it has rdatasets to commit.
  42          */
  43         dns_addrdatasetfunc_t add;
  44         /*%
  45          * dns_load_master / dns_rdata_fromtext call this to issue a error.
  46          */
  47         void    (*error)(struct dns_rdatacallbacks *, const char *, ...);
  48         /*%
  49          * dns_load_master / dns_rdata_fromtext call this to issue a warning.
  50          */
  51         void    (*warn)(struct dns_rdatacallbacks *, const char *, ...);
  52         /*%
  53          * Private data handles for use by the above callback functions.
  54          */
  55         void    *add_private;
  56         void    *error_private;
  57         void    *warn_private;
  58 };
  59
  60 /***
  61  ***    Initialization
  62  ***/
  63
  64 void
  65 dns_rdatacallbacks_init(dns_rdatacallbacks_t *callbacks);
  66 /*%<
  67  * Initialize 'callbacks'.
  68  *
  69  *
  70  * \li  'error' and 'warn' are set to default callbacks that print the
  71  *      error message through the DNS library log context.
  72  *
  73  *\li   All other elements are initialized to NULL.
  74  *
  75  * Requires:
  76  *  \li    'callbacks' is a valid dns_rdatacallbacks_t,
  77  */
  78
  79 void
  80 dns_rdatacallbacks_init_stdio(dns_rdatacallbacks_t *callbacks);
  81 /*%<
  82  * Like dns_rdatacallbacks_init, but logs to stdio.
  83  */
  84
  85 ISC_LANG_ENDDECLS
  86
  87 #endif /* DNS_CALLBACKS_H */