/*

 * Copyright (C) 2004, 2005, 2007  Internet Systems Consortium, Inc. ("ISC")

 * Copyright (C) 1998-2001  Internet Software Consortium.

 *

 * Permission to use, copy, modify, and/or distribute this software for any

 * purpose with or without fee is hereby granted, provided that the above

 * copyright notice and this permission notice appear in all copies.

 *

 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH

 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY

 * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,

 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM

 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE

 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR

 * PERFORMANCE OF THIS SOFTWARE.

 */

/* $Id: error.c,v 1.21 2007/06/19 23:47:17 tbox Exp $ */

/*! \file */

#include <config.h>

#include <stdio.h>

#include <stdlib.h>

#include <isc/error.h>

#include <isc/msgs.h>

/*% Default unexpected callback. */

static void

default_unexpected_callback(const char *, int, const char *, va_list)

     ISC_FORMAT_PRINTF(3, 0);

/*% Default fatal callback. */

static void

default_fatal_callback(const char *, int, const char *, va_list)

     ISC_FORMAT_PRINTF(3, 0);

/*% unexpected_callback */

static isc_errorcallback_t unexpected_callback = default_unexpected_callback;

static isc_errorcallback_t fatal_callback = default_fatal_callback;

void

isc_error_setunexpected(isc_errorcallback_t cb) {

  if (cb == NULL)

    unexpected_callback = default_unexpected_callback;

  else

    unexpected_callback = cb;

}

void

isc_error_setfatal(isc_errorcallback_t cb) {

  if (cb == NULL)

    fatal_callback = default_fatal_callback;

  else

    fatal_callback = cb;

}

void

isc_error_unexpected(const char *file, int line, const char *format, ...) {

  va_list args;

  va_start(args, format);

  (unexpected_callback)(file, line, format, args);

  va_end(args);

}

void

isc_error_fatal(const char *file, int line, const char *format, ...) {

  va_list args;

  va_start(args, format);

  (fatal_callback)(file, line, format, args);

  va_end(args);

  abort();

}

void

isc_error_runtimecheck(const char *file, int line, const char *expression) {

  isc_error_fatal(file, line, "RUNTIME_CHECK(%s) %s", expression,

      isc_msgcat_get(isc_msgcat, ISC_MSGSET_GENERAL,

               ISC_MSG_FAILED, "failed"));

}

static void

default_unexpected_callback(const char *file, int line, const char *format,

          va_list args)

{

  fprintf(stderr, "%s:%d: ", file, line);

  vfprintf(stderr, format, args);

  fprintf(stderr, "\n");

  fflush(stderr);

}

static void

default_fatal_callback(const char *file, int line, const char *format,

           va_list args)

{

  fprintf(stderr, "%s:%d: %s: ", file, line,

    isc_msgcat_get(isc_msgcat, ISC_MSGSET_GENERAL,

             ISC_MSG_FATALERROR, "fatal error"));

  vfprintf(stderr, format, args);

  fprintf(stderr, "\n");

  fflush(stderr);

}