Add some thread primitives
[mech_eap.git] / util_cred.c
1 /*
2  * Copyright (c) 2010, JANET(UK)
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  *
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer.
11  *
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  *
16  * 3. Neither the name of JANET(UK) nor the names of its contributors
17  *    may be used to endorse or promote products derived from this software
18  *    without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30  * SUCH DAMAGE.
31  */
32
33 #include "gssapiP_eap.h"
34
35 OM_uint32
36 gssEapAllocCred(OM_uint32 *minor, gss_cred_id_t *pCred)
37 {
38     OM_uint32 tmpMinor;
39     gss_cred_id_t cred;
40
41     assert(*pCred == GSS_C_NO_CREDENTIAL);
42
43     cred = (gss_cred_id_t)GSSEAP_CALLOC(1, sizeof(*cred));
44     if (cred == NULL) {
45         *minor = ENOMEM;
46         return GSS_S_FAILURE;
47     }
48
49     if (GSSEAP_MUTEX_INIT(&cred->mutex) != 0) {
50         *minor = errno;
51         gssEapReleaseCred(&tmpMinor, &cred);
52         return GSS_S_FAILURE;
53     }
54
55     *pCred = cred;
56
57     *minor = 0;
58     return GSS_S_COMPLETE;
59 }
60
61 OM_uint32
62 gssEapReleaseCred(OM_uint32 *minor, gss_cred_id_t *pCred)
63 {
64     OM_uint32 tmpMinor;
65     gss_cred_id_t cred = *pCred;
66     krb5_context kerbCtx = NULL;
67
68     if (cred == GSS_C_NO_CREDENTIAL) {
69         return GSS_S_COMPLETE;
70     }
71
72     gssEapReleaseName(&tmpMinor, &cred->name);
73
74     if (cred->password.value != NULL) {
75         memset(cred->password.value, 0, cred->password.length);
76         GSSEAP_FREE(cred->password.value);
77     }
78
79     GSSEAP_MUTEX_DESTROY(&cred->mutex);
80     memset(cred, 0, sizeof(*cred));
81     GSSEAP_FREE(cred);
82     *pCred = NULL;
83
84     *minor = 0;
85     return GSS_S_COMPLETE;
86 }