mk_error.c revision 178825 
1/*
2 * Copyright (c) 1997 - 2003 Kungliga Tekniska H�gskolan
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
36RCSID("$Id: mk_error.c 15457 2005-06-16 21:16:40Z lha $");
37
38krb5_error_code KRB5_LIB_FUNCTION
39krb5_mk_error(krb5_context context,
40	      krb5_error_code error_code,
41	      const char *e_text,
42	      const krb5_data *e_data,
43	      const krb5_principal client,
44	      const krb5_principal server,
45	      time_t *client_time,
46	      int *client_usec,
47	      krb5_data *reply)
48{
49    KRB_ERROR msg;
50    krb5_timestamp sec;
51    int32_t usec;
52    size_t len;
53    krb5_error_code ret = 0;
54
55    krb5_us_timeofday (context, &sec, &usec);
56
57    memset(&msg, 0, sizeof(msg));
58    msg.pvno     = 5;
59    msg.msg_type = krb_error;
60    msg.stime    = sec;
61    msg.susec    = usec;
62    msg.ctime    = client_time;
63    msg.cusec    = client_usec;
64    /* Make sure we only send `protocol' error codes */
65    if(error_code < KRB5KDC_ERR_NONE || error_code >= KRB5_ERR_RCSID) {
66	if(e_text == NULL)
67	    e_text = krb5_get_err_text(context, error_code);
68	error_code = KRB5KRB_ERR_GENERIC;
69    }
70    msg.error_code = error_code - KRB5KDC_ERR_NONE;
71    if (e_text)
72	msg.e_text = rk_UNCONST(&e_text);
73    if (e_data)
74	msg.e_data = rk_UNCONST(e_data);
75    if(server){
76	msg.realm = server->realm;
77	msg.sname = server->name;
78    }else{
79	msg.realm = "<unspecified realm>";
80    }
81    if(client){
82	msg.crealm = &client->realm;
83	msg.cname = &client->name;
84    }
85
86    ASN1_MALLOC_ENCODE(KRB_ERROR, reply->data, reply->length, &msg, &len, ret);
87    if (ret)
88	return ret;
89    if(reply->length != len)
90	krb5_abortx(context, "internal error in ASN.1 encoder");
91    return 0;
92}
93