xref: /illumos-gate/usr/src/lib/libgss/g_userok.c (revision 20a7641f9918de8574b8b3b47dbe35c4bfc78df1)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #include <stdio.h>
28 #include <stdlib.h>
29 #include <unistd.h>
30 #include <deflt.h>
31 #include <mechglueP.h>
32 #include <gssapi/gssapi.h>
33 #include <gssapi/gssapi_ext.h>
34 
35 
36 static OM_uint32
37 compare_names(OM_uint32 *minor,
38 	    const gss_OID mech_type,
39 	    const gss_name_t name,
40 	    const char *user,
41 	    int *user_ok)
42 {
43 
44 	OM_uint32 status, tmpMinor;
45 	gss_name_t imported_name;
46 	gss_name_t canon_name;
47 	gss_buffer_desc gss_user;
48 	int match = 0;
49 
50 	*user_ok = 0;
51 
52 	gss_user.value = (void *)user;
53 	if (!gss_user.value || !name || !mech_type)
54 		return (GSS_S_BAD_NAME);
55 	gss_user.length = strlen(gss_user.value);
56 
57 	status = gss_import_name(minor,
58 				&gss_user,
59 				GSS_C_NT_USER_NAME,
60 				&imported_name);
61 	if (status != GSS_S_COMPLETE) {
62 		goto out;
63 	}
64 
65 	status = gss_canonicalize_name(minor,
66 				    imported_name,
67 				    mech_type,
68 				    &canon_name);
69 	if (status != GSS_S_COMPLETE) {
70 		(void) gss_release_name(&tmpMinor, &imported_name);
71 		goto out;
72 	}
73 
74 	status = gss_compare_name(minor,
75 				canon_name,
76 				name,
77 				&match);
78 	(void) gss_release_name(&tmpMinor, &canon_name);
79 	(void) gss_release_name(&tmpMinor, &imported_name);
80 	if (status == GSS_S_COMPLETE) {
81 		if (match)
82 			*user_ok = 1; /* remote user is a-ok */
83 	}
84 
85 out:
86 	return (status);
87 }
88 
89 
90 OM_uint32
91 __gss_userok(OM_uint32 *minor,
92 	    const gss_name_t name,
93 	    const char *user,
94 	    int *user_ok)
95 
96 {
97 	gss_mechanism mech;
98 	gss_union_name_t intName;
99 	gss_name_t mechName = NULL;
100 	OM_uint32 major;
101 
102 	if (minor == NULL || user_ok == NULL)
103 		return (GSS_S_CALL_INACCESSIBLE_WRITE);
104 
105 	if (name == NULL || user == NULL)
106 		return (GSS_S_CALL_INACCESSIBLE_READ);
107 
108 	*user_ok = 0;
109 	*minor = GSS_S_COMPLETE;
110 
111 	intName = (gss_union_name_t)name;
112 
113 	mech = __gss_get_mechanism(intName->mech_type);
114 	if (mech == NULL)
115 		return (GSS_S_UNAVAILABLE);
116 
117 	/* may need to import the name if this is not MN */
118 	if (intName->mech_type == NULL) {
119 		return (GSS_S_FAILURE);
120 	} else
121 		mechName = intName->mech_name;
122 
123 	if (mech->__gss_userok)
124 		major = mech->__gss_userok(mech->context,  minor, mechName,
125 				user, user_ok);
126 	else
127 		major = compare_names(minor, intName->mech_type,
128 				    name, user, user_ok);
129 
130 	return (major);
131 } /* gss_userok */
132