external/bsd/ntp/dist/lib/isc/error.c

   1 /*      $NetBSD$        */
   2
   3 /*
   4  * Copyright (C) 2004, 2005, 2007  Internet Systems Consortium, Inc. ("ISC")
   5  * Copyright (C) 1998-2001  Internet Software Consortium.
   6  *
   7  * Permission to use, copy, modify, and/or distribute this software for any
   8  * purpose with or without fee is hereby granted, provided that the above
   9  * copyright notice and this permission notice appear in all copies.
  10  *
  11  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
  12  * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
  13  * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
  14  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
  15  * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
  16  * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  17  * PERFORMANCE OF THIS SOFTWARE.
  18  */
  19
  20 /* Id: error.c,v 1.21 2007/06/19 23:47:17 tbox Exp */
  21
  22 /*! \file */
  23
  24 #include <config.h>
  25
  26 #include <stdio.h>
  27 #include <stdlib.h>
  28
  29 #include <isc/error.h>
  30 #include <isc/msgs.h>
  31
  32 /*% Default unexpected callback. */
  33 static void
  34 default_unexpected_callback(const char *, int, const char *, va_list)
  35      ISC_FORMAT_PRINTF(3, 0);
  36
  37 /*% Default fatal callback. */
  38 static void
  39 default_fatal_callback(const char *, int, const char *, va_list)
  40      ISC_FORMAT_PRINTF(3, 0);
  41
  42 /*% unexpected_callback */
  43 static isc_errorcallback_t unexpected_callback = default_unexpected_callback;
  44 static isc_errorcallback_t fatal_callback = default_fatal_callback;
  45
  46 void
  47 isc_error_setunexpected(isc_errorcallback_t cb) {
  48         if (cb == NULL)
  49                 unexpected_callback = default_unexpected_callback;
  50         else
  51                 unexpected_callback = cb;
  52 }
  53
  54 void
  55 isc_error_setfatal(isc_errorcallback_t cb) {
  56         if (cb == NULL)
  57                 fatal_callback = default_fatal_callback;
  58         else
  59                 fatal_callback = cb;
  60 }
  61
  62 void
  63 isc_error_unexpected(const char *file, int line, const char *format, ...) {
  64         va_list args;
  65
  66         va_start(args, format);
  67         (unexpected_callback)(file, line, format, args);
  68         va_end(args);
  69 }
  70
  71 void
  72 isc_error_fatal(const char *file, int line, const char *format, ...) {
  73         va_list args;
  74
  75         va_start(args, format);
  76         (fatal_callback)(file, line, format, args);
  77         va_end(args);
  78         abort();
  79 }
  80
  81 void
  82 isc_error_runtimecheck(const char *file, int line, const char *expression) {
  83         isc_error_fatal(file, line, "RUNTIME_CHECK(%s) %s", expression,
  84                         isc_msgcat_get(isc_msgcat, ISC_MSGSET_GENERAL,
  85                                        ISC_MSG_FAILED, "failed"));
  86 }
  87
  88 static void
  89 default_unexpected_callback(const char *file, int line, const char *format,
  90                             va_list args)
  91 {
  92         fprintf(stderr, "%s:%d: ", file, line);
  93         vfprintf(stderr, format, args);
  94         fprintf(stderr, "\n");
  95         fflush(stderr);
  96 }
  97
  98 static void
  99 default_fatal_callback(const char *file, int line, const char *format,
 100                        va_list args)
 101 {
 102         fprintf(stderr, "%s:%d: %s: ", file, line,
 103                 isc_msgcat_get(isc_msgcat, ISC_MSGSET_GENERAL,
 104                                ISC_MSG_FATALERROR, "fatal error"));
 105         vfprintf(stderr, format, args);
 106         fprintf(stderr, "\n");
 107         fflush(stderr);
 108 }