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 (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright 2010 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 *
25 * Copyright 2013 Nexenta Systems, Inc. All rights reserved.
26 */
27
28 /*
29 * NT Token library (kernel/user)
30 */
31
32 #if defined(_KERNEL) || defined(_FAKE_KERNEL)
33 #include <sys/types.h>
34 #include <sys/cmn_err.h>
35 #include <sys/kmem.h>
36 #else /* _KERNEL */
37 #include <stdlib.h>
38 #include <strings.h>
39 #include <syslog.h>
40 #endif /* _KERNEL */
41
42 #include <smbsrv/string.h>
43 #include <smbsrv/smb_token.h>
44 #include <smbsrv/smb_xdr.h>
45
46 /*
47 * smb_token_query_privilege
48 *
49 * Find out if the specified privilege is enable in the given
50 * access token.
51 */
52 int
smb_token_query_privilege(smb_token_t * token,int priv_id)53 smb_token_query_privilege(smb_token_t *token, int priv_id)
54 {
55 smb_privset_t *privset;
56 int i;
57
58 if ((token == NULL) || (token->tkn_privileges == NULL))
59 return (0);
60
61 privset = token->tkn_privileges;
62 for (i = 0; privset->priv_cnt; i++) {
63 if (privset->priv[i].luid.lo_part == priv_id) {
64 if (privset->priv[i].attrs == SE_PRIVILEGE_ENABLED)
65 return (1);
66 else
67 return (0);
68 }
69 }
70
71 return (0);
72 }
73
74 /*
75 * Basic sanity check on a token.
76 */
77 boolean_t
smb_token_valid(smb_token_t * token)78 smb_token_valid(smb_token_t *token)
79 {
80 if (token == NULL)
81 return (B_FALSE);
82
83 if ((token->tkn_user.i_sid == NULL) ||
84 (token->tkn_owner.i_sid == NULL) ||
85 (token->tkn_primary_grp.i_sid == NULL) ||
86 (token->tkn_account_name == NULL) ||
87 (token->tkn_domain_name == NULL) ||
88 (token->tkn_posix_grps == NULL))
89 return (B_FALSE);
90
91 if ((token->tkn_win_grps.i_cnt != 0) &&
92 (token->tkn_win_grps.i_ids == NULL))
93 return (B_FALSE);
94
95 return (B_TRUE);
96 }
97
98 #if !defined(_KERNEL) && !defined(_FAKE_KERNEL)
99 /*
100 * Encode: structure -> flat buffer (buffer size)
101 * Pre-condition: obj is non-null.
102 */
103 uint8_t *
smb_token_encode(smb_token_t * obj,uint32_t * len)104 smb_token_encode(smb_token_t *obj, uint32_t *len)
105 {
106 uint8_t *buf;
107 XDR xdrs;
108
109 if (!obj) {
110 syslog(LOG_ERR, "smb_token_encode: invalid parameter");
111 return (NULL);
112 }
113
114 *len = xdr_sizeof(smb_token_xdr, obj);
115 buf = (uint8_t *)malloc(*len);
116 if (!buf) {
117 syslog(LOG_ERR, "smb_token_encode: %m");
118 return (NULL);
119 }
120
121 xdrmem_create(&xdrs, (const caddr_t)buf, *len, XDR_ENCODE);
122
123 if (!smb_token_xdr(&xdrs, obj)) {
124 syslog(LOG_ERR, "smb_token_encode: XDR encode error");
125 *len = 0;
126 free(buf);
127 buf = NULL;
128 }
129
130 xdr_destroy(&xdrs);
131 return (buf);
132 }
133
134 /*
135 * Decode: flat buffer -> structure
136 */
137 smb_logon_t *
smb_logon_decode(uint8_t * buf,uint32_t len)138 smb_logon_decode(uint8_t *buf, uint32_t len)
139 {
140 smb_logon_t *obj;
141 XDR xdrs;
142
143 xdrmem_create(&xdrs, (const caddr_t)buf, len, XDR_DECODE);
144
145 if ((obj = malloc(sizeof (smb_logon_t))) == NULL) {
146 syslog(LOG_ERR, "smb_logon_decode: %m");
147 xdr_destroy(&xdrs);
148 return (NULL);
149 }
150
151 bzero(obj, sizeof (smb_logon_t));
152 if (!smb_logon_xdr(&xdrs, obj)) {
153 syslog(LOG_ERR, "smb_logon_decode: XDR decode error");
154 free(obj);
155 obj = NULL;
156 }
157
158 xdr_destroy(&xdrs);
159 return (obj);
160 }
161
162 void
smb_logon_free(smb_logon_t * obj)163 smb_logon_free(smb_logon_t *obj)
164 {
165 xdr_free(smb_logon_xdr, (char *)obj);
166 free(obj);
167 }
168 #endif /* _KERNEL */
169