xref: /freebsd/crypto/heimdal/appl/ftp/ftpd/gss_userok.c (revision 5ca8e32633c4ffbbcd6762e5888b6a4ba0708c6c)
1 /*
2  * Copyright (c) 1998 - 2001 Kungliga Tekniska Högskolan
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 "ftpd_locl.h"
35 #include <gssapi/gssapi.h>
36 
37 /* XXX sync with gssapi.c */
38 struct gssapi_data {
39     gss_ctx_id_t context_hdl;
40     gss_name_t client_name;
41     gss_cred_id_t delegated_cred_handle;
42     void *mech_data;
43 };
44 
45 int gssapi_userok(void*, char*); /* to keep gcc happy */
46 int gssapi_session(void*, char*); /* to keep gcc happy */
47 
48 int
49 gssapi_userok(void *app_data, char *username)
50 {
51     struct gssapi_data *data = app_data;
52 
53     /* Yes, this logic really is inverted. */
54     return !gss_userok(data->client_name, username);
55 }
56 
57 int
58 gssapi_session(void *app_data, char *username)
59 {
60     struct gssapi_data *data = app_data;
61     OM_uint32 major, minor;
62     int ret = 0;
63 
64     if (data->delegated_cred_handle != GSS_C_NO_CREDENTIAL) {
65         major = gss_store_cred(&minor, data->delegated_cred_handle,
66                                GSS_C_INITIATE, GSS_C_NO_OID,
67                                1, 1, NULL, NULL);
68         if (GSS_ERROR(major))
69             ret = 1;
70 	afslog(NULL, 1);
71     }
72 
73     gss_release_cred(&minor, &data->delegated_cred_handle);
74     return ret;
75 }
76