/contrib/ntp/libisc/assertions.c

 1/*
 2 * Copyright (C) 1997-2001  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: assertions.c,v 1.16 2001/07/16 03:52:05 mayer Exp $ */
19
20#include <config.h>
21
22#include <stdio.h>
23#include <stdlib.h>
24
25#include <isc/assertions.h>
26#include <isc/msgs.h>
27
28/*
29 * Forward.
30 */
31
32static void
33default_callback(const char *, int, isc_assertiontype_t, const char *);
34
35/*
36 * Public.
37 */
38
39LIBISC_EXTERNAL_DATA isc_assertioncallback_t isc_assertion_failed =
40					     default_callback;
41
42void
43isc_assertion_setcallback(isc_assertioncallback_t cb) {
44	if (cb == NULL)
45		isc_assertion_failed = default_callback;
46	else
47		isc_assertion_failed = cb;
48}
49
50const char *
51isc_assertion_typetotext(isc_assertiontype_t type) {
52	const char *result;
53
54	/*
55	 * These strings have purposefully not been internationalized
56	 * because they are considered to essentially be keywords of
57	 * the ISC development environment.
58	 */
59	switch (type) {
60	case isc_assertiontype_require:
61		result = "REQUIRE";
62		break;
63	case isc_assertiontype_ensure:
64		result = "ENSURE";
65		break;
66	case isc_assertiontype_insist:
67		result = "INSIST";
68		break;
69	case isc_assertiontype_invariant:
70		result = "INVARIANT";
71		break;
72	default:
73		result = NULL;
74	}
75	return (result);
76}
77
78/*
79 * Private.
80 */
81
82static void
83default_callback(const char *file, int line, isc_assertiontype_t type,
84		 const char *cond)
85{
86	fprintf(stderr, "%s:%d: %s(%s) %s.\n",
87		file, line, isc_assertion_typetotext(type), cond,
88		isc_msgcat_get(isc_msgcat, ISC_MSGSET_GENERAL,
89			       ISC_MSG_FAILED, "failed"));
90	fflush(stderr);
91	abort();
92	/* NOTREACHED */
93}