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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
32 static void
33 default_callback(const char *, int, isc_assertiontype_t, const char *);
34
35 /*
36  * Public.
37  */
38
39 LIBISC_EXTERNAL_DATA isc_assertioncallback_t isc_assertion_failed =
40                                              default_callback;
41
42 void
43 isc_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
50 const char *
51 isc_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
82 static void
83 default_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 }