lib/krb5/rd_error.c

   1 /*
   2  * Copyright (c) 1997 - 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("$Id$");
  37
  38 krb5_error_code KRB5_LIB_FUNCTION
  39 krb5_rd_error(krb5_context context,
  40               const krb5_data *msg,
  41               KRB_ERROR *result)
  42 {
  43
  44     size_t len;
  45     krb5_error_code ret;
  46
  47     ret = decode_KRB_ERROR(msg->data, msg->length, result, &len);
  48     if(ret) {
  49         krb5_clear_error_string(context);
  50         return ret;
  51     }
  52     result->error_code += KRB5KDC_ERR_NONE;
  53     return 0;
  54 }
  55
  56 void KRB5_LIB_FUNCTION
  57 krb5_free_error_contents (krb5_context context,
  58                           krb5_error *error)
  59 {
  60     free_KRB_ERROR(error);
  61     memset(error, 0, sizeof(*error));
  62 }
  63
  64 void KRB5_LIB_FUNCTION
  65 krb5_free_error (krb5_context context,
  66                  krb5_error *error)
  67 {
  68     krb5_free_error_contents (context, error);
  69     free (error);
  70 }
  71
  72 krb5_error_code KRB5_LIB_FUNCTION
  73 krb5_error_from_rd_error(krb5_context context,
  74                          const krb5_error *error,
  75                          const krb5_creds *creds)
  76 {
  77     krb5_error_code ret;
  78
  79     ret = error->error_code;
  80     if (error->e_text != NULL) {
  81         krb5_set_error_string(context, "%s", *error->e_text);
  82     } else {
  83         char clientname[256], servername[256];
  84
  85         if (creds != NULL) {
  86             krb5_unparse_name_fixed(context, creds->client,
  87                                     clientname, sizeof(clientname));
  88             krb5_unparse_name_fixed(context, creds->server,
  89                                     servername, sizeof(servername));
  90         }
  91
  92         switch (ret) {
  93         case KRB5KDC_ERR_NAME_EXP :
  94             krb5_set_error_string(context, "Client %s%s%s expired",
  95                                   creds ? "(" : "",
  96                                   creds ? clientname : "",
  97                                   creds ? ")" : "");
  98             break;
  99         case KRB5KDC_ERR_SERVICE_EXP :
 100             krb5_set_error_string(context, "Server %s%s%s expired",
 101                                   creds ? "(" : "",
 102                                   creds ? servername : "",
 103                                   creds ? ")" : "");
 104             break;
 105         case KRB5KDC_ERR_C_PRINCIPAL_UNKNOWN :
 106             krb5_set_error_string(context, "Client %s%s%s unknown",
 107                                   creds ? "(" : "",
 108                                   creds ? clientname : "",
 109                                   creds ? ")" : "");
 110             break;
 111         case KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN :
 112             krb5_set_error_string(context, "Server %s%s%s unknown",
 113                                   creds ? "(" : "",
 114                                   creds ? servername : "",
 115                                   creds ? ")" : "");
 116             break;
 117         default :
 118             krb5_clear_error_string(context);
 119             break;
 120         }
 121     }
 122     return ret;
 123 }