xref: /freebsd/crypto/heimdal/lib/gssapi/krb5/authorize_localname.c (revision 4436b51dff5736e74da464946049ea6899a88938)
1 /*
2  * Copyright (c) 2011, PADL Software Pty Ltd.
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  *
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer.
11  *
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  *
16  * 3. Neither the name of PADL Software nor the names of its contributors
17  *    may be used to endorse or promote products derived from this software
18  *    without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY PADL SOFTWARE AND CONTRIBUTORS ``AS IS'' AND
21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23  * ARE DISCLAIMED.  IN NO EVENT SHALL PADL SOFTWARE OR CONTRIBUTORS BE LIABLE
24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30  * SUCH DAMAGE.
31  */
32 
33 #include "gsskrb5_locl.h"
34 
35 OM_uint32 GSSAPI_CALLCONV
36 _gsskrb5_authorize_localname(OM_uint32 *minor_status,
37                              const gss_name_t input_name,
38                              gss_const_buffer_t user_name,
39                              gss_const_OID user_name_type)
40 {
41     krb5_context context;
42     krb5_principal princ = (krb5_principal)input_name;
43     char *user;
44     int user_ok;
45 
46     if (!gss_oid_equal(user_name_type, GSS_C_NT_USER_NAME))
47         return GSS_S_BAD_NAMETYPE;
48 
49     GSSAPI_KRB5_INIT(&context);
50 
51     user = malloc(user_name->length + 1);
52     if (user == NULL) {
53         *minor_status = ENOMEM;
54         return GSS_S_FAILURE;
55     }
56 
57     memcpy(user, user_name->value, user_name->length);
58     user[user_name->length] = '\0';
59 
60     *minor_status = 0;
61     user_ok = krb5_kuserok(context, princ, user);
62 
63     free(user);
64 
65     return user_ok ? GSS_S_COMPLETE : GSS_S_UNAUTHORIZED;
66 }
67