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      1 /*	$NetBSD: rd_error.c,v 1.2 2017/01/28 21:31:49 christos Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1997 - 2001 Kungliga Tekniska Hgskolan
      5  * (Royal Institute of Technology, Stockholm, Sweden).
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  *
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  *
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * 3. Neither the name of the Institute nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  */
     35 
     36 #include "krb5_locl.h"
     37 
     38 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
     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_message(context);
     50 	return ret;
     51     }
     52     result->error_code += KRB5KDC_ERR_NONE;
     53     return 0;
     54 }
     55 
     56 KRB5_LIB_FUNCTION void KRB5_LIB_CALL
     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 KRB5_LIB_FUNCTION void KRB5_LIB_CALL
     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_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
     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_message(context, ret, "%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_message(context, ret,
     95 				   N_("Client %s%s%s expired", ""),
     96 				   creds ? "(" : "",
     97 				   creds ? clientname : "",
     98 				   creds ? ")" : "");
     99 	    break;
    100 	case KRB5KDC_ERR_SERVICE_EXP :
    101 	    krb5_set_error_message(context, ret,
    102 				   N_("Server %s%s%s expired", ""),
    103 				   creds ? "(" : "",
    104 				   creds ? servername : "",
    105 				   creds ? ")" : "");
    106 	    break;
    107 	case KRB5KDC_ERR_C_PRINCIPAL_UNKNOWN :
    108 	    krb5_set_error_message(context, ret,
    109 				   N_("Client %s%s%s unknown", ""),
    110 				   creds ? "(" : "",
    111 				   creds ? clientname : "",
    112 				   creds ? ")" : "");
    113 	    break;
    114 	case KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN :
    115 	    krb5_set_error_message(context, ret,
    116 				   N_("Server %s%s%s unknown", ""),
    117 				   creds ? "(" : "",
    118 				   creds ? servername : "",
    119 				   creds ? ")" : "");
    120 	    break;
    121 	default :
    122 	    krb5_clear_error_message(context);
    123 	    break;
    124 	}
    125     }
    126     return ret;
    127 }
    128