1/*
2 * Copyright (C) 1998-2001  Internet Software Consortium.
3 *
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM
9 * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
10 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
11 * INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
12 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
13 * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
14 * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
15 * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
18/* $Id: error.c,v 1.16 2001/08/08 22:54:49 gson Exp $ */
19
20#include <config.h>
21
22#include <stdio.h>
23#include <stdlib.h>
24
25#include <isc/error.h>
26#include <isc/msgs.h>
27
28static void
29default_unexpected_callback(const char *, int, const char *, va_list)
30     ISC_FORMAT_PRINTF(3, 0);
31
32static void
33default_fatal_callback(const char *, int, const char *, va_list)
34     ISC_FORMAT_PRINTF(3, 0);
35
36static isc_errorcallback_t unexpected_callback = default_unexpected_callback;
37static isc_errorcallback_t fatal_callback = default_fatal_callback;
38
39void
40isc_error_setunexpected(isc_errorcallback_t cb) {
41	if (cb == NULL)
42		unexpected_callback = default_unexpected_callback;
43	else
44		unexpected_callback = cb;
45}
46
47void
48isc_error_setfatal(isc_errorcallback_t cb) {
49	if (cb == NULL)
50		fatal_callback = default_fatal_callback;
51	else
52		fatal_callback = cb;
53}
54
55void
56isc_error_unexpected(const char *file, int line, const char *format, ...) {
57	va_list args;
58
59	va_start(args, format);
60	(unexpected_callback)(file, line, format, args);
61	va_end(args);
62}
63
64void
65isc_error_fatal(const char *file, int line, const char *format, ...) {
66	va_list args;
67
68	va_start(args, format);
69	(fatal_callback)(file, line, format, args);
70	va_end(args);
71	abort();
72}
73
74void
75isc_error_runtimecheck(const char *file, int line, const char *expression) {
76	isc_error_fatal(file, line, "RUNTIME_CHECK(%s) %s", expression,
77			isc_msgcat_get(isc_msgcat, ISC_MSGSET_GENERAL,
78				       ISC_MSG_FAILED, "failed"));
79}
80
81static void
82default_unexpected_callback(const char *file, int line, const char *format,
83			    va_list args)
84{
85	fprintf(stderr, "%s:%d: ", file, line);
86	vfprintf(stderr, format, args);
87	fprintf(stderr, "\n");
88	fflush(stderr);
89}
90
91static void
92default_fatal_callback(const char *file, int line, const char *format,
93		       va_list args)
94{
95	fprintf(stderr, "%s:%d: %s: ", file, line,
96		isc_msgcat_get(isc_msgcat, ISC_MSGSET_GENERAL,
97			       ISC_MSG_FATALERROR, "fatal error"));
98	vfprintf(stderr, format, args);
99	fprintf(stderr, "\n");
100	fflush(stderr);
101}
102