xref: /freebsd/crypto/heimdal/lib/krb5/misc.c (revision 7aa383846770374466b1dcb2cefd71bde9acf463)
1 /*
2  * Copyright (c) 1997 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 
36 RCSID("$Id: misc.c 21174 2007-06-19 10:10:58Z lha $");
37 
38 krb5_error_code KRB5_LIB_FUNCTION
39 _krb5_s4u2self_to_checksumdata(krb5_context context,
40 			       const PA_S4U2Self *self,
41 			       krb5_data *data)
42 {
43     krb5_error_code ret;
44     krb5_ssize_t ssize;
45     krb5_storage *sp;
46     size_t size;
47     int i;
48 
49     sp = krb5_storage_emem();
50     if (sp == NULL) {
51 	krb5_clear_error_string(context);
52 	return ENOMEM;
53     }
54     krb5_storage_set_flags(sp, KRB5_STORAGE_BYTEORDER_LE);
55     ret = krb5_store_int32(sp, self->name.name_type);
56     if (ret)
57 	goto out;
58     for (i = 0; i < self->name.name_string.len; i++) {
59 	size = strlen(self->name.name_string.val[i]);
60 	ssize = krb5_storage_write(sp, self->name.name_string.val[i], size);
61 	if (ssize != size) {
62 	    ret = ENOMEM;
63 	    goto out;
64 	}
65     }
66     size = strlen(self->realm);
67     ssize = krb5_storage_write(sp, self->realm, size);
68     if (ssize != size) {
69 	ret = ENOMEM;
70 	goto out;
71     }
72     size = strlen(self->auth);
73     ssize = krb5_storage_write(sp, self->auth, size);
74     if (ssize != size) {
75 	ret = ENOMEM;
76 	goto out;
77     }
78 
79     ret = krb5_storage_to_data(sp, data);
80     krb5_storage_free(sp);
81     return ret;
82 
83 out:
84     krb5_clear_error_string(context);
85     return ret;
86 }
87