xref: /freebsd/sys/kgssapi/gss_acquire_cred.c (revision 4b9d6057)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
3  *
4  * Copyright (c) 2008 Isilon Inc http://www.isilon.com/
5  * Authors: Doug Rabson <dfr@rabson.org>
6  * Developed with Red Inc: Alfred Perlstein <alfred@freebsd.org>
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  * 1. Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions and the following disclaimer.
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  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27  * SUCH DAMAGE.
28  */
29 
30 #include <sys/param.h>
31 #include <sys/kernel.h>
32 #include <sys/kobj.h>
33 #include <sys/lock.h>
34 #include <sys/malloc.h>
35 #include <sys/mutex.h>
36 #include <sys/proc.h>
37 
38 #include <kgssapi/gssapi.h>
39 #include <kgssapi/gssapi_impl.h>
40 
41 #include "gssd.h"
42 
43 OM_uint32
44 gss_acquire_cred(OM_uint32 *minor_status,
45     const gss_name_t desired_name,
46     OM_uint32 time_req,
47     const gss_OID_set desired_mechs,
48     gss_cred_usage_t cred_usage,
49     gss_cred_id_t *output_cred_handle,
50     gss_OID_set *actual_mechs,
51     OM_uint32 *time_rec)
52 {
53 	OM_uint32 major_status;
54 	struct acquire_cred_res res;
55 	struct acquire_cred_args args;
56 	enum clnt_stat stat;
57 	gss_cred_id_t cred;
58 	int i;
59 	CLIENT *cl;
60 
61 	*minor_status = 0;
62 	cl = kgss_gssd_client();
63 	if (cl == NULL)
64 		return (GSS_S_FAILURE);
65 
66 	args.uid = curthread->td_ucred->cr_uid;
67 	if (desired_name)
68 		args.desired_name = desired_name->handle;
69 	else
70 		args.desired_name = 0;
71 	args.time_req = time_req;
72 	args.desired_mechs = desired_mechs;
73 	args.cred_usage = cred_usage;
74 
75 	bzero(&res, sizeof(res));
76 	stat = gssd_acquire_cred_1(&args, &res, cl);
77 	CLNT_RELEASE(cl);
78 	if (stat != RPC_SUCCESS) {
79 		*minor_status = stat;
80 		return (GSS_S_FAILURE);
81 	}
82 
83 	if (res.major_status != GSS_S_COMPLETE) {
84 		*minor_status = res.minor_status;
85 		return (res.major_status);
86 	}
87 
88 	cred = malloc(sizeof(struct _gss_cred_id_t), M_GSSAPI, M_WAITOK);
89 	cred->handle = res.output_cred;
90 	*output_cred_handle = cred;
91 	if (actual_mechs) {
92 		major_status = gss_create_empty_oid_set(minor_status,
93 		    actual_mechs);
94 		if (major_status)
95 			return (major_status);
96 		for (i = 0; i < res.actual_mechs->count; i++) {
97 			major_status = gss_add_oid_set_member(minor_status,
98 			    &res.actual_mechs->elements[i], actual_mechs);
99 			if (major_status)
100 				return (major_status);
101 		}
102 	}
103 	if (time_rec)
104 		*time_rec = res.time_rec;
105 
106 	xdr_free((xdrproc_t) xdr_acquire_cred_res, &res);
107 
108 	return (GSS_S_COMPLETE);
109 }
110