1 /*
2 * Copyright (c) 1997, 2003 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 "gsskrb5_locl.h"
35
_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)36 OM_uint32 GSSAPI_CALLCONV _gsskrb5_inquire_cred
37 (OM_uint32 * minor_status,
38 const gss_cred_id_t cred_handle,
39 gss_name_t * output_name,
40 OM_uint32 * lifetime,
41 gss_cred_usage_t * cred_usage,
42 gss_OID_set * mechanisms
43 )
44 {
45 krb5_context context;
46 gss_cred_id_t aqcred_init = GSS_C_NO_CREDENTIAL;
47 gss_cred_id_t aqcred_accept = GSS_C_NO_CREDENTIAL;
48 gsskrb5_cred acred = NULL, icred = NULL;
49 OM_uint32 ret;
50
51 *minor_status = 0;
52
53 if (output_name)
54 *output_name = NULL;
55 if (mechanisms)
56 *mechanisms = GSS_C_NO_OID_SET;
57
58 GSSAPI_KRB5_INIT (&context);
59
60 if (cred_handle == GSS_C_NO_CREDENTIAL) {
61 ret = _gsskrb5_acquire_cred(minor_status,
62 GSS_C_NO_NAME,
63 GSS_C_INDEFINITE,
64 GSS_C_NO_OID_SET,
65 GSS_C_ACCEPT,
66 &aqcred_accept,
67 NULL,
68 NULL);
69 if (ret == GSS_S_COMPLETE)
70 acred = (gsskrb5_cred)aqcred_accept;
71
72 ret = _gsskrb5_acquire_cred(minor_status,
73 GSS_C_NO_NAME,
74 GSS_C_INDEFINITE,
75 GSS_C_NO_OID_SET,
76 GSS_C_INITIATE,
77 &aqcred_init,
78 NULL,
79 NULL);
80 if (ret == GSS_S_COMPLETE)
81 icred = (gsskrb5_cred)aqcred_init;
82
83 if (icred == NULL && acred == NULL) {
84 *minor_status = 0;
85 return GSS_S_NO_CRED;
86 }
87 } else
88 acred = (gsskrb5_cred)cred_handle;
89
90 if (acred)
91 HEIMDAL_MUTEX_lock(&acred->cred_id_mutex);
92 if (icred)
93 HEIMDAL_MUTEX_lock(&icred->cred_id_mutex);
94
95 if (output_name != NULL) {
96 if (icred && icred->principal != NULL) {
97 gss_name_t name;
98
99 if (acred && acred->principal)
100 name = (gss_name_t)acred->principal;
101 else
102 name = (gss_name_t)icred->principal;
103
104 ret = _gsskrb5_duplicate_name(minor_status, name, output_name);
105 if (ret)
106 goto out;
107 } else if (acred && acred->usage == GSS_C_ACCEPT) {
108 krb5_principal princ;
109 *minor_status = krb5_sname_to_principal(context, NULL,
110 NULL, KRB5_NT_SRV_HST,
111 &princ);
112 if (*minor_status) {
113 ret = GSS_S_FAILURE;
114 goto out;
115 }
116 *output_name = (gss_name_t)princ;
117 } else {
118 krb5_principal princ;
119 *minor_status = krb5_get_default_principal(context,
120 &princ);
121 if (*minor_status) {
122 ret = GSS_S_FAILURE;
123 goto out;
124 }
125 *output_name = (gss_name_t)princ;
126 }
127 }
128 if (lifetime != NULL) {
129 OM_uint32 alife = GSS_C_INDEFINITE, ilife = GSS_C_INDEFINITE;
130
131 if (acred) alife = acred->lifetime;
132 if (icred) ilife = icred->lifetime;
133
134 ret = _gsskrb5_lifetime_left(minor_status,
135 context,
136 min(alife,ilife),
137 lifetime);
138 if (ret)
139 goto out;
140 }
141 if (cred_usage != NULL) {
142 if (acred && icred)
143 *cred_usage = GSS_C_BOTH;
144 else if (acred)
145 *cred_usage = GSS_C_ACCEPT;
146 else if (icred)
147 *cred_usage = GSS_C_INITIATE;
148 else
149 abort();
150 }
151
152 if (mechanisms != NULL) {
153 ret = gss_create_empty_oid_set(minor_status, mechanisms);
154 if (ret)
155 goto out;
156 if (acred)
157 ret = gss_add_oid_set_member(minor_status,
158 &acred->mechanisms->elements[0],
159 mechanisms);
160 if (ret == GSS_S_COMPLETE && icred)
161 ret = gss_add_oid_set_member(minor_status,
162 &icred->mechanisms->elements[0],
163 mechanisms);
164 if (ret)
165 goto out;
166 }
167 ret = GSS_S_COMPLETE;
168 out:
169 if (acred)
170 HEIMDAL_MUTEX_unlock(&acred->cred_id_mutex);
171 if (icred)
172 HEIMDAL_MUTEX_unlock(&icred->cred_id_mutex);
173
174 if (aqcred_init != GSS_C_NO_CREDENTIAL)
175 ret = _gsskrb5_release_cred(minor_status, &aqcred_init);
176 if (aqcred_accept != GSS_C_NO_CREDENTIAL)
177 ret = _gsskrb5_release_cred(minor_status, &aqcred_accept);
178
179 return ret;
180 }
181