1 /* $NetBSD: inquire_cred.c,v 1.1.1.2 2014/04/24 12:45:29 pettai 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
_gsskrb5_inquire_cred(OM_uint32 * minor_status,const gss_cred_id_t cred_handle,gss_name_t * output_name,OM_uint32 * lifetime,gss_cred_usage_t * cred_usage,gss_OID_set * mechanisms)38 OM_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;
170 out:
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