1/*	$NetBSD: inquire_cred.c,v 1.1.1.1 2011/04/13 18:14:45 elric Exp $	*/
2
3/*
4 * Copyright (c) 1997, 2003 Kungliga Tekniska Högskolan
5 * (Royal Institute of Technology, Stockholm, Sweden).
6 * All rights reserved.
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 *
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * 3. Neither the name of the Institute nor the names of its contributors
20 *    may be used to endorse or promote products derived from this software
21 *    without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
36#include "gsskrb5_locl.h"
37
38OM_uint32 GSSAPI_CALLCONV _gsskrb5_inquire_cred
39(OM_uint32 * minor_status,
40 const gss_cred_id_t cred_handle,
41 gss_name_t * output_name,
42 OM_uint32 * lifetime,
43 gss_cred_usage_t * cred_usage,
44 gss_OID_set * mechanisms
45    )
46{
47    krb5_context context;
48    gss_cred_id_t aqcred_init = GSS_C_NO_CREDENTIAL;
49    gss_cred_id_t aqcred_accept = GSS_C_NO_CREDENTIAL;
50    gsskrb5_cred acred = NULL, icred = NULL;
51    OM_uint32 ret;
52
53    *minor_status = 0;
54
55    if (output_name)
56	*output_name = NULL;
57    if (mechanisms)
58	*mechanisms = GSS_C_NO_OID_SET;
59
60    GSSAPI_KRB5_INIT (&context);
61
62    if (cred_handle == GSS_C_NO_CREDENTIAL) {
63	ret = _gsskrb5_acquire_cred(minor_status,
64				    GSS_C_NO_NAME,
65				    GSS_C_INDEFINITE,
66				    GSS_C_NO_OID_SET,
67				    GSS_C_ACCEPT,
68				    &aqcred_accept,
69				    NULL,
70				    NULL);
71	if (ret == GSS_S_COMPLETE)
72	    acred = (gsskrb5_cred)aqcred_accept;
73
74	ret = _gsskrb5_acquire_cred(minor_status,
75				    GSS_C_NO_NAME,
76				    GSS_C_INDEFINITE,
77				    GSS_C_NO_OID_SET,
78				    GSS_C_INITIATE,
79				    &aqcred_init,
80				    NULL,
81				    NULL);
82	if (ret == GSS_S_COMPLETE)
83	    icred = (gsskrb5_cred)aqcred_init;
84
85	if (icred == NULL && acred == NULL) {
86	    *minor_status = 0;
87	    return GSS_S_NO_CRED;
88	}
89    } else
90	acred = (gsskrb5_cred)cred_handle;
91
92    if (acred)
93	HEIMDAL_MUTEX_lock(&acred->cred_id_mutex);
94    if (icred)
95	HEIMDAL_MUTEX_lock(&icred->cred_id_mutex);
96
97    if (output_name != NULL) {
98	if (icred && icred->principal != NULL) {
99	    gss_name_t name;
100
101	    if (acred && acred->principal)
102		name = (gss_name_t)acred->principal;
103	    else
104		name = (gss_name_t)icred->principal;
105
106            ret = _gsskrb5_duplicate_name(minor_status, name, output_name);
107            if (ret)
108		goto out;
109	} else if (acred && acred->usage == GSS_C_ACCEPT) {
110	    krb5_principal princ;
111	    *minor_status = krb5_sname_to_principal(context, NULL,
112						    NULL, KRB5_NT_SRV_HST,
113						    &princ);
114	    if (*minor_status) {
115		ret = GSS_S_FAILURE;
116		goto out;
117	    }
118	    *output_name = (gss_name_t)princ;
119	} else {
120	    krb5_principal princ;
121	    *minor_status = krb5_get_default_principal(context,
122						       &princ);
123	    if (*minor_status) {
124		ret = GSS_S_FAILURE;
125		goto out;
126	    }
127	    *output_name = (gss_name_t)princ;
128	}
129    }
130    if (lifetime != NULL) {
131	OM_uint32 alife = GSS_C_INDEFINITE, ilife = GSS_C_INDEFINITE;
132
133	if (acred) alife = acred->lifetime;
134	if (icred) ilife = icred->lifetime;
135
136	ret = _gsskrb5_lifetime_left(minor_status,
137				     context,
138				     min(alife,ilife),
139				     lifetime);
140	if (ret)
141	    goto out;
142    }
143    if (cred_usage != NULL) {
144	if (acred && icred)
145	    *cred_usage = GSS_C_BOTH;
146	else if (acred)
147	    *cred_usage = GSS_C_ACCEPT;
148	else if (icred)
149	    *cred_usage = GSS_C_INITIATE;
150	else
151	    abort();
152    }
153
154    if (mechanisms != NULL) {
155        ret = gss_create_empty_oid_set(minor_status, mechanisms);
156        if (ret)
157	    goto out;
158	if (acred)
159	    ret = gss_add_oid_set_member(minor_status,
160					 &acred->mechanisms->elements[0],
161					 mechanisms);
162	if (ret == GSS_S_COMPLETE && icred)
163	    ret = gss_add_oid_set_member(minor_status,
164					 &icred->mechanisms->elements[0],
165					 mechanisms);
166        if (ret)
167	    goto out;
168    }
169    ret = GSS_S_COMPLETE;
170out:
171    if (acred)
172	HEIMDAL_MUTEX_unlock(&acred->cred_id_mutex);
173    if (icred)
174	HEIMDAL_MUTEX_unlock(&icred->cred_id_mutex);
175
176    if (aqcred_init != GSS_C_NO_CREDENTIAL)
177	ret = _gsskrb5_release_cred(minor_status, &aqcred_init);
178    if (aqcred_accept != GSS_C_NO_CREDENTIAL)
179	ret = _gsskrb5_release_cred(minor_status, &aqcred_accept);
180
181    return ret;
182}
183