1/*
2 * Copyright (C) 2004, 2005, 2008  Internet Systems Consortium, Inc. ("ISC")
3 * Copyright (C) 1997, 1999, 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#if !defined(LINT) && !defined(CODECENTER)
19static const char rcsid[] = "$Id: assertions.c,v 1.5 2008/11/14 02:36:51 marka Exp $";
20#endif
21
22#include "port_before.h"
23
24#include <errno.h>
25#include <stdio.h>
26#include <stdlib.h>
27#include <string.h>
28
29#include <isc/assertions.h>
30
31#include "port_after.h"
32
33/*
34 * Forward.
35 */
36
37static void default_assertion_failed(const char *, int, assertion_type,
38				     const char *, int);
39
40/*
41 * Public.
42 */
43
44assertion_failure_callback __assertion_failed = default_assertion_failed;
45
46void
47set_assertion_failure_callback(assertion_failure_callback f) {
48	if (f == NULL)
49		__assertion_failed = default_assertion_failed;
50	else
51		__assertion_failed = f;
52}
53
54const char *
55assertion_type_to_text(assertion_type type) {
56	const char *result;
57
58	switch (type) {
59	case assert_require:
60		result = "REQUIRE";
61		break;
62	case assert_ensure:
63		result = "ENSURE";
64		break;
65	case assert_insist:
66		result = "INSIST";
67		break;
68	case assert_invariant:
69		result = "INVARIANT";
70		break;
71	default:
72		result = NULL;
73	}
74	return (result);
75}
76
77/*
78 * Private.
79 */
80
81/* coverity[+kill] */
82static void
83default_assertion_failed(const char *file, int line, assertion_type type,
84			 const char *cond, int print_errno)
85{
86	fprintf(stderr, "%s:%d: %s(%s)%s%s failed.\n",
87		file, line, assertion_type_to_text(type), cond,
88		(print_errno) ? ": " : "",
89		(print_errno) ? strerror(errno) : "");
90	abort();
91	/* NOTREACHED */
92}
93
94/*! \file */
95