xref: /freebsd/crypto/heimdal/lib/gssapi/mech/gss_release_cred.c (revision 5ca8e32633c4ffbbcd6762e5888b6a4ba0708c6c)
1 /*-
2  * Copyright (c) 2005 Doug Rabson
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  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  *
26  *	$FreeBSD: src/lib/libgssapi/gss_release_cred.c,v 1.1 2005/12/29 14:40:20 dfr Exp $
27  */
28 
29 #include "mech_locl.h"
30 
31 /**
32  * Release a credentials
33  *
34  * Its ok to release the GSS_C_NO_CREDENTIAL/NULL credential, it will
35  * return a GSS_S_COMPLETE error code. On return cred_handle is set ot
36  * GSS_C_NO_CREDENTIAL.
37  *
38  * Example:
39  *
40  * @code
41  * gss_cred_id_t cred = GSS_C_NO_CREDENTIAL;
42  * major = gss_release_cred(&minor, &cred);
43  * @endcode
44  *
45  * @param minor_status minor status return code, mech specific
46  * @param cred_handle a pointer to the credential too release
47  *
48  * @return an gssapi error code
49  *
50  * @ingroup gssapi
51  */
52 
53 GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL
54 gss_release_cred(OM_uint32 *minor_status, gss_cred_id_t *cred_handle)
55 {
56 	struct _gss_cred *cred = (struct _gss_cred *) *cred_handle;
57 	struct _gss_mechanism_cred *mc;
58 
59 	if (*cred_handle == GSS_C_NO_CREDENTIAL)
60 	    return (GSS_S_COMPLETE);
61 
62 	while (HEIM_SLIST_FIRST(&cred->gc_mc)) {
63 		mc = HEIM_SLIST_FIRST(&cred->gc_mc);
64 		HEIM_SLIST_REMOVE_HEAD(&cred->gc_mc, gmc_link);
65 		mc->gmc_mech->gm_release_cred(minor_status, &mc->gmc_cred);
66 		free(mc);
67 	}
68 	free(cred);
69 
70 	*minor_status = 0;
71 	*cred_handle = GSS_C_NO_CREDENTIAL;
72 	return (GSS_S_COMPLETE);
73 }
74