1 /*
2 * Copyright (C) 2004, 2005, 2007 Internet Systems Consortium, Inc. ("ISC")
3 * Copyright (C) 1998-2001 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: error.c,v 1.21 2007/06/19 23:47:17 tbox Exp $ */
19
20 /*! \file */
21
22 #include <config.h>
23
24 #include <stdio.h>
25 #include <stdlib.h>
26
27 #include <isc/error.h>
28 #include <isc/msgs.h>
29
30 /*% Default unexpected callback. */
31 static void
32 default_unexpected_callback(const char *, int, const char *, va_list)
33 ISC_FORMAT_PRINTF(3, 0);
34
35 /*% Default fatal callback. */
36 static void
37 default_fatal_callback(const char *, int, const char *, va_list)
38 ISC_FORMAT_PRINTF(3, 0);
39
40 /*% unexpected_callback */
41 static isc_errorcallback_t unexpected_callback = default_unexpected_callback;
42 static isc_errorcallback_t fatal_callback = default_fatal_callback;
43
44 void
isc_error_setunexpected(isc_errorcallback_t cb)45 isc_error_setunexpected(isc_errorcallback_t cb) {
46 if (cb == NULL)
47 unexpected_callback = default_unexpected_callback;
48 else
49 unexpected_callback = cb;
50 }
51
52 void
isc_error_setfatal(isc_errorcallback_t cb)53 isc_error_setfatal(isc_errorcallback_t cb) {
54 if (cb == NULL)
55 fatal_callback = default_fatal_callback;
56 else
57 fatal_callback = cb;
58 }
59
60 void
isc_error_unexpected(const char * file,int line,const char * format,...)61 isc_error_unexpected(const char *file, int line, const char *format, ...) {
62 va_list args;
63
64 va_start(args, format);
65 (unexpected_callback)(file, line, format, args);
66 va_end(args);
67 }
68
69 void
isc_error_fatal(const char * file,int line,const char * format,...)70 isc_error_fatal(const char *file, int line, const char *format, ...) {
71 va_list args;
72
73 va_start(args, format);
74 (fatal_callback)(file, line, format, args);
75 va_end(args);
76 abort();
77 }
78
79 void
isc_error_runtimecheck(const char * file,int line,const char * expression)80 isc_error_runtimecheck(const char *file, int line, const char *expression) {
81 isc_error_fatal(file, line, "RUNTIME_CHECK(%s) %s", expression,
82 isc_msgcat_get(isc_msgcat, ISC_MSGSET_GENERAL,
83 ISC_MSG_FAILED, "failed"));
84 }
85
86 static void
default_unexpected_callback(const char * file,int line,const char * format,va_list args)87 default_unexpected_callback(const char *file, int line, const char *format,
88 va_list args)
89 {
90 fprintf(stderr, "%s:%d: ", file, line);
91 vfprintf(stderr, format, args);
92 fprintf(stderr, "\n");
93 fflush(stderr);
94 }
95
96 static void
default_fatal_callback(const char * file,int line,const char * format,va_list args)97 default_fatal_callback(const char *file, int line, const char *format,
98 va_list args)
99 {
100 fprintf(stderr, "%s:%d: %s: ", file, line,
101 isc_msgcat_get(isc_msgcat, ISC_MSGSET_GENERAL,
102 ISC_MSG_FATALERROR, "fatal error"));
103 vfprintf(stderr, format, args);
104 fprintf(stderr, "\n");
105 fflush(stderr);
106 }
107