/contrib/bind9/lib/isc/error.c

  1/*
  2 * Copyright (C) 2004, 2005, 2007  Internet Systems Consortium, Inc. ("ISC")
  3 * Copyright (C) 1998-2001  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: error.c,v 1.21 2007/06/19 23:47:17 tbox Exp $ */
 19
 20/*! \file */
 21
 22#include <config.h>
 23
 24#include <stdio.h>
 25#include <stdlib.h>
 26
 27#include <isc/error.h>
 28#include <isc/msgs.h>
 29
 30/*% Default unexpected callback. */
 31static void
 32default_unexpected_callback(const char *, int, const char *, va_list)
 33     ISC_FORMAT_PRINTF(3, 0);
 34
 35/*% Default fatal callback. */
 36static void
 37default_fatal_callback(const char *, int, const char *, va_list)
 38     ISC_FORMAT_PRINTF(3, 0);
 39
 40/*% unexpected_callback */
 41static isc_errorcallback_t unexpected_callback = default_unexpected_callback;
 42static isc_errorcallback_t fatal_callback = default_fatal_callback;
 43
 44void
 45isc_error_setunexpected(isc_errorcallback_t cb) {
 46	if (cb == NULL)
 47		unexpected_callback = default_unexpected_callback;
 48	else
 49		unexpected_callback = cb;
 50}
 51
 52void
 53isc_error_setfatal(isc_errorcallback_t cb) {
 54	if (cb == NULL)
 55		fatal_callback = default_fatal_callback;
 56	else
 57		fatal_callback = cb;
 58}
 59
 60void
 61isc_error_unexpected(const char *file, int line, const char *format, ...) {
 62	va_list args;
 63
 64	va_start(args, format);
 65	(unexpected_callback)(file, line, format, args);
 66	va_end(args);
 67}
 68
 69void
 70isc_error_fatal(const char *file, int line, const char *format, ...) {
 71	va_list args;
 72
 73	va_start(args, format);
 74	(fatal_callback)(file, line, format, args);
 75	va_end(args);
 76	abort();
 77}
 78
 79void
 80isc_error_runtimecheck(const char *file, int line, const char *expression) {
 81	isc_error_fatal(file, line, "RUNTIME_CHECK(%s) %s", expression,
 82			isc_msgcat_get(isc_msgcat, ISC_MSGSET_GENERAL,
 83				       ISC_MSG_FAILED, "failed"));
 84}
 85
 86static void
 87default_unexpected_callback(const char *file, int line, const char *format,
 88			    va_list args)
 89{
 90	fprintf(stderr, "%s:%d: ", file, line);
 91	vfprintf(stderr, format, args);
 92	fprintf(stderr, "\n");
 93	fflush(stderr);
 94}
 95
 96static void
 97default_fatal_callback(const char *file, int line, const char *format,
 98		       va_list args)
 99{
100	fprintf(stderr, "%s:%d: %s: ", file, line,
101		isc_msgcat_get(isc_msgcat, ISC_MSGSET_GENERAL,
102			       ISC_MSG_FATALERROR, "fatal error"));
103	vfprintf(stderr, format, args);
104	fprintf(stderr, "\n");
105	fflush(stderr);
106}