1 /*	$NetBSD: rd_error.c,v 1.1.1.1 2011/04/13 18:15:37 elric Exp $	*/
2 
3 /*
4  * Copyright (c) 1997 - 2001 Kungliga Tekniska Högskolan
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
krb5_rd_error(krb5_context context,const krb5_data * msg,KRB_ERROR * result)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
krb5_free_error_contents(krb5_context context,krb5_error * error)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
krb5_free_error(krb5_context context,krb5_error * error)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
krb5_error_from_rd_error(krb5_context context,const krb5_error * error,const krb5_creds * creds)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