contrib/bind-9.5.2/lib/isc/error.c

   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
  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
  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
  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
  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
  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
  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
  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 }