contrib/bind-9.2.4rc7/lib/isc/error.c

   1 /*
   2  * Copyright (C) 2004  Internet Systems Consortium, Inc. ("ISC")
   3  * Copyright (C) 1998-2001  Internet Software Consortium.
   4  *
   5  * Permission to use, copy, modify, and 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 1.16.2.1 2004/03/09 06:11:45 marka Exp $ */
  19
  20 #include <config.h>
  21
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24
  25 #include <isc/error.h>
  26 #include <isc/msgs.h>
  27
  28 static void
  29 default_unexpected_callback(const char *, int, const char *, va_list)
  30      ISC_FORMAT_PRINTF(3, 0);
  31
  32 static void
  33 default_fatal_callback(const char *, int, const char *, va_list)
  34      ISC_FORMAT_PRINTF(3, 0);
  35
  36 static isc_errorcallback_t unexpected_callback = default_unexpected_callback;
  37 static isc_errorcallback_t fatal_callback = default_fatal_callback;
  38
  39 void
  40 isc_error_setunexpected(isc_errorcallback_t cb) {
  41         if (cb == NULL)
  42                 unexpected_callback = default_unexpected_callback;
  43         else
  44                 unexpected_callback = cb;
  45 }
  46
  47 void
  48 isc_error_setfatal(isc_errorcallback_t cb) {
  49         if (cb == NULL)
  50                 fatal_callback = default_fatal_callback;
  51         else
  52                 fatal_callback = cb;
  53 }
  54
  55 void
  56 isc_error_unexpected(const char *file, int line, const char *format, ...) {
  57         va_list args;
  58
  59         va_start(args, format);
  60         (unexpected_callback)(file, line, format, args);
  61         va_end(args);
  62 }
  63
  64 void
  65 isc_error_fatal(const char *file, int line, const char *format, ...) {
  66         va_list args;
  67
  68         va_start(args, format);
  69         (fatal_callback)(file, line, format, args);
  70         va_end(args);
  71         abort();
  72 }
  73
  74 void
  75 isc_error_runtimecheck(const char *file, int line, const char *expression) {
  76         isc_error_fatal(file, line, "RUNTIME_CHECK(%s) %s", expression,
  77                         isc_msgcat_get(isc_msgcat, ISC_MSGSET_GENERAL,
  78                                        ISC_MSG_FAILED, "failed"));
  79 }
  80
  81 static void
  82 default_unexpected_callback(const char *file, int line, const char *format,
  83                             va_list args)
  84 {
  85         fprintf(stderr, "%s:%d: ", file, line);
  86         vfprintf(stderr, format, args);
  87         fprintf(stderr, "\n");
  88         fflush(stderr);
  89 }
  90
  91 static void
  92 default_fatal_callback(const char *file, int line, const char *format,
  93                        va_list args)
  94 {
  95         fprintf(stderr, "%s:%d: %s: ", file, line,
  96                 isc_msgcat_get(isc_msgcat, ISC_MSGSET_GENERAL,
  97                                ISC_MSG_FATALERROR, "fatal error"));
  98         vfprintf(stderr, format, args);
  99         fprintf(stderr, "\n");
 100         fflush(stderr);
 101 }