s3: in sys_popen(), validate input before opening the pipe.
[kai/samba.git] / source3 / lib / util_builtin.c
1 /*
2    Unix SMB/CIFS implementation.
3    Translate BUILTIN names to SIDs and vice versa
4    Copyright (C) Volker Lendecke 2005
5
6    This program is free software; you can redistribute it and/or modify
7    it under the terms of the GNU General Public License as published by
8    the Free Software Foundation; either version 3 of the License, or
9    (at your option) any later version.
10
11    This program is distributed in the hope that it will be useful,
12    but WITHOUT ANY WARRANTY; without even the implied warranty of
13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14    GNU General Public License for more details.
15
16    You should have received a copy of the GNU General Public License
17    along with this program.  If not, see <http://www.gnu.org/licenses/>.
18 */
19
20 #include "includes.h"
21 #include "../libcli/security/security.h"
22
23 struct rid_name_map {
24         uint32 rid;
25         const char *name;
26 };
27
28 static const struct rid_name_map builtin_aliases[] = {
29         { BUILTIN_RID_ADMINISTRATORS,           "Administrators" },
30         { BUILTIN_RID_USERS,            "Users" },
31         { BUILTIN_RID_GUESTS,           "Guests" },
32         { BUILTIN_RID_POWER_USERS,      "Power Users" },
33         { BUILTIN_RID_ACCOUNT_OPERATORS,        "Account Operators" },
34         { BUILTIN_RID_SERVER_OPERATORS,         "Server Operators" },
35         { BUILTIN_RID_PRINT_OPERATORS,          "Print Operators" },
36         { BUILTIN_RID_BACKUP_OPERATORS,         "Backup Operators" },
37         { BUILTIN_RID_REPLICATOR,               "Replicator" },
38         { BUILTIN_RID_RAS_SERVERS,              "RAS Servers" },
39         { BUILTIN_RID_PRE_2K_ACCESS,
40                 "Pre-Windows 2000 Compatible Access" },
41         { BUILTIN_RID_REMOTE_DESKTOP_USERS,
42                 "Remote Desktop Users" },
43         { BUILTIN_RID_NETWORK_CONF_OPERATORS,
44                 "Network Configuration Operators" },
45         { BUILTIN_RID_INCOMING_FOREST_TRUST,
46                 "Incoming Forest Trust Builders" },
47         { BUILTIN_RID_PERFMON_USERS,
48                 "Performance Monitor Users" },
49         { BUILTIN_RID_PERFLOG_USERS,
50                 "Performance Log Users" },
51         { BUILTIN_RID_AUTH_ACCESS,
52                 "Windows Authorization Access Group" },
53         { BUILTIN_RID_TS_LICENSE_SERVERS,
54                 "Terminal Server License Servers" },
55         { BUILTIN_RID_DISTRIBUTED_COM_USERS,
56                 "Distributed COM Users" },
57         { BUILTIN_RID_CRYPTO_OPERATORS,
58                 "Cryptographic Operators" },
59         { BUILTIN_RID_EVENT_LOG_READERS,
60                 "Event Log Readers" },
61         { BUILTIN_RID_CERT_SERV_DCOM_ACCESS,
62                 "Certificate Service DCOM Access" },
63         {  0, NULL}};
64
65 /*******************************************************************
66  Look up a rid in the BUILTIN domain
67  ********************************************************************/
68 bool lookup_builtin_rid(TALLOC_CTX *mem_ctx, uint32 rid, const char **name)
69 {
70         const struct rid_name_map *aliases = builtin_aliases;
71
72         while (aliases->name != NULL) {
73                 if (rid == aliases->rid) {
74                         *name = talloc_strdup(mem_ctx, aliases->name);
75                         return True;
76                 }
77                 aliases++;
78         }
79
80         return False;
81 }
82
83 /*******************************************************************
84  Look up a name in the BUILTIN domain
85  ********************************************************************/
86 bool lookup_builtin_name(const char *name, uint32 *rid)
87 {
88         const struct rid_name_map *aliases = builtin_aliases;
89
90         while (aliases->name != NULL) {
91                 if (strequal(name, aliases->name)) {
92                         *rid = aliases->rid;
93                         return True;
94                 }
95                 aliases++;
96         }
97
98         return False;
99 }
100
101 /*****************************************************************
102  Return the name of the BUILTIN domain
103 *****************************************************************/
104
105 const char *builtin_domain_name(void)
106 {
107         return "BUILTIN";
108 }
109
110 /*****************************************************************
111  Check if the SID is the builtin SID (S-1-5-32).
112 *****************************************************************/
113
114 bool sid_check_is_builtin(const struct dom_sid *sid)
115 {
116         return dom_sid_equal(sid, &global_sid_Builtin);
117 }
118
119 /*****************************************************************
120  Check if the SID is one of the builtin SIDs (S-1-5-32-a).
121 *****************************************************************/
122
123 bool sid_check_is_in_builtin(const struct dom_sid *sid)
124 {
125         struct dom_sid dom_sid;
126
127         sid_copy(&dom_sid, sid);
128         sid_split_rid(&dom_sid, NULL);
129
130         return sid_check_is_builtin(&dom_sid);
131 }
132
133 /********************************************************************
134  Check if the SID is one of the well-known builtin SIDs (S-1-5-32-x)
135 *********************************************************************/
136
137 bool sid_check_is_wellknown_builtin(const struct dom_sid *sid)
138 {
139         struct dom_sid dom_sid;
140         const struct rid_name_map *aliases = builtin_aliases;
141         uint32_t rid;
142
143         sid_copy(&dom_sid, sid);
144         sid_split_rid(&dom_sid, &rid);
145
146         if (!sid_check_is_builtin(&dom_sid)) {
147                 return false;
148         }
149
150         while (aliases->name != NULL) {
151                 if (aliases->rid == rid) {
152                         return True;
153                 }
154                 aliases++;
155         }
156
157         return False;
158 }