xref: /freebsd/sys/kgssapi/gss_acquire_cred.c (revision b0b1dbdd)
1 /*-
2  * Copyright (c) 2008 Isilon Inc http://www.isilon.com/
3  * Authors: Doug Rabson <dfr@rabson.org>
4  * Developed with Red Inc: Alfred Perlstein <alfred@freebsd.org>
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  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25  * SUCH DAMAGE.
26  */
27 
28 #include <sys/cdefs.h>
29 __FBSDID("$FreeBSD$");
30 
31 #include <sys/param.h>
32 #include <sys/kernel.h>
33 #include <sys/kobj.h>
34 #include <sys/lock.h>
35 #include <sys/malloc.h>
36 #include <sys/mutex.h>
37 #include <sys/proc.h>
38 
39 #include <kgssapi/gssapi.h>
40 #include <kgssapi/gssapi_impl.h>
41 
42 #include "gssd.h"
43 
44 OM_uint32
45 gss_acquire_cred(OM_uint32 *minor_status,
46     const gss_name_t desired_name,
47     OM_uint32 time_req,
48     const gss_OID_set desired_mechs,
49     gss_cred_usage_t cred_usage,
50     gss_cred_id_t *output_cred_handle,
51     gss_OID_set *actual_mechs,
52     OM_uint32 *time_rec)
53 {
54 	OM_uint32 major_status;
55 	struct acquire_cred_res res;
56 	struct acquire_cred_args args;
57 	enum clnt_stat stat;
58 	gss_cred_id_t cred;
59 	int i;
60 	CLIENT *cl;
61 
62 	*minor_status = 0;
63 	cl = kgss_gssd_client();
64 	if (cl == NULL)
65 		return (GSS_S_FAILURE);
66 
67 	args.uid = curthread->td_ucred->cr_uid;
68 	if (desired_name)
69 		args.desired_name = desired_name->handle;
70 	else
71 		args.desired_name = 0;
72 	args.time_req = time_req;
73 	args.desired_mechs = desired_mechs;
74 	args.cred_usage = cred_usage;
75 
76 	bzero(&res, sizeof(res));
77 	stat = gssd_acquire_cred_1(&args, &res, cl);
78 	CLNT_RELEASE(cl);
79 	if (stat != RPC_SUCCESS) {
80 		*minor_status = stat;
81 		return (GSS_S_FAILURE);
82 	}
83 
84 	if (res.major_status != GSS_S_COMPLETE) {
85 		*minor_status = res.minor_status;
86 		return (res.major_status);
87 	}
88 
89 	cred = malloc(sizeof(struct _gss_cred_id_t), M_GSSAPI, M_WAITOK);
90 	cred->handle = res.output_cred;
91 	*output_cred_handle = cred;
92 	if (actual_mechs) {
93 		major_status = gss_create_empty_oid_set(minor_status,
94 		    actual_mechs);
95 		if (major_status)
96 			return (major_status);
97 		for (i = 0; i < res.actual_mechs->count; i++) {
98 			major_status = gss_add_oid_set_member(minor_status,
99 			    &res.actual_mechs->elements[i], actual_mechs);
100 			if (major_status)
101 				return (major_status);
102 		}
103 	}
104 	if (time_rec)
105 		*time_rec = res.time_rec;
106 
107 	xdr_free((xdrproc_t) xdr_acquire_cred_res, &res);
108 
109 	return (GSS_S_COMPLETE);
110 }
111