1/*
2 * Copyright (C) 2004, 2005, 2007, 2008  Internet Systems Consortium, Inc. ("ISC")
3 * Copyright (C) 1997-2001  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: assertions.c,v 1.23 2008/10/15 23:47:31 tbox Exp $ */
19
20/*! \file */
21
22#include <config.h>
23
24#include <stdio.h>
25#include <stdlib.h>
26
27#include <isc/assertions.h>
28#include <isc/msgs.h>
29
30/*%
31 * Forward.
32 */
33/* coverity[+kill] */
34static void
35default_callback(const char *, int, isc_assertiontype_t, const char *);
36
37/*%
38 * Public.
39 */
40
41LIBISC_EXTERNAL_DATA isc_assertioncallback_t isc_assertion_failed =
42					     default_callback;
43
44/*% Set callback. */
45void
46isc_assertion_setcallback(isc_assertioncallback_t cb) {
47	if (cb == NULL)
48		isc_assertion_failed = default_callback;
49	else
50		isc_assertion_failed = cb;
51}
52
53/*% Type to Text */
54const char *
55isc_assertion_typetotext(isc_assertiontype_t type) {
56	const char *result;
57
58	/*
59	 * These strings have purposefully not been internationalized
60	 * because they are considered to essentially be keywords of
61	 * the ISC development environment.
62	 */
63	switch (type) {
64	case isc_assertiontype_require:
65		result = "REQUIRE";
66		break;
67	case isc_assertiontype_ensure:
68		result = "ENSURE";
69		break;
70	case isc_assertiontype_insist:
71		result = "INSIST";
72		break;
73	case isc_assertiontype_invariant:
74		result = "INVARIANT";
75		break;
76	default:
77		result = NULL;
78	}
79	return (result);
80}
81
82/*
83 * Private.
84 */
85
86static void
87default_callback(const char *file, int line, isc_assertiontype_t type,
88		 const char *cond)
89{
90	fprintf(stderr, "%s:%d: %s(%s) %s.\n",
91		file, line, isc_assertion_typetotext(type), cond,
92		isc_msgcat_get(isc_msgcat, ISC_MSGSET_GENERAL,
93			       ISC_MSG_FAILED, "failed"));
94	fflush(stderr);
95	abort();
96	/* NOTREACHED */
97}
98