crypto/heimdal-0.6.3/lib/krb5/error_string.c

   1 /*
   2  * Copyright (c) 2001 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * 3. Neither the name of the Institute nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #include "krb5_locl.h"
  35
  36 RCSID("$Id: error_string.c,v 1.1 2001/05/06 23:07:22 assar Exp $");
  37
  38 #undef __attribute__
  39 #define __attribute__(X)
  40
  41 void
  42 krb5_free_error_string(krb5_context context, char *str)
  43 {
  44     if (str != context->error_buf)
  45         free(str);
  46 }
  47
  48 void
  49 krb5_clear_error_string(krb5_context context)
  50 {
  51     if (context->error_string != NULL
  52         && context->error_string != context->error_buf)
  53         free(context->error_string);
  54     context->error_string = NULL;
  55 }
  56
  57 krb5_error_code
  58 krb5_set_error_string(krb5_context context, const char *fmt, ...)
  59     __attribute__((format (printf, 2, 3)))
  60 {
  61     krb5_error_code ret;
  62     va_list ap;
  63
  64     va_start(ap, fmt);
  65     ret = krb5_vset_error_string (context, fmt, ap);
  66     va_end(ap);
  67     return ret;
  68 }
  69
  70 krb5_error_code
  71 krb5_vset_error_string(krb5_context context, const char *fmt, va_list args)
  72     __attribute__ ((format (printf, 2, 0)))
  73 {
  74     krb5_clear_error_string(context);
  75     vasprintf(&context->error_string, fmt, args);
  76     if(context->error_string == NULL) {
  77         vsnprintf (context->error_buf, sizeof(context->error_buf), fmt, args);
  78         context->error_string = context->error_buf;
  79     }
  80     return 0;
  81 }
  82
  83 char*
  84 krb5_get_error_string(krb5_context context)
  85 {
  86     char *ret = context->error_string;
  87     context->error_string = NULL;
  88     return ret;
  89 }
  90
  91 krb5_boolean
  92 krb5_have_error_string(krb5_context context)
  93 {
  94     return context->error_string != NULL;
  95 }