summaryrefslogtreecommitdiff
path: root/source4/libcli/security/security_token.c
blob: f105ed391f9df144ac7e0ef969c188a2a88499bf (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
/* 
   Unix SMB/CIFS implementation.

   security descriptor utility functions

   Copyright (C) Andrew Tridgell 		2004
   Copyright (C) Stefan Metzmacher 		2005
      
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.
   
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
   
   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#include "includes.h"
#include "libcli/security/security.h"
#include "auth/session.h"

/*
  return a blank security token
*/
struct security_token *security_token_initialise(TALLOC_CTX *mem_ctx)
{
	struct security_token *st;

	st = talloc(mem_ctx, struct security_token);
	if (!st) {
		return NULL;
	}

	st->user_sid = NULL;
	st->group_sid = NULL;
	st->num_sids = 0;
	st->sids = NULL;
	st->privilege_mask = 0;

	return st;
}

/****************************************************************************
 prints a struct security_token to debug output.
****************************************************************************/
void security_token_debug(int dbg_lev, const struct security_token *token)
{
	TALLOC_CTX *mem_ctx;
	int i;

	if (!token) {
		DEBUG(dbg_lev, ("Security token: (NULL)\n"));
		return;
	}

	mem_ctx = talloc_init("security_token_debug()");
	if (!mem_ctx) {
		return;
	}

	DEBUG(dbg_lev, ("Security token of user %s\n",
				    dom_sid_string(mem_ctx, token->user_sid) ));
	DEBUGADD(dbg_lev, (" SIDs (%lu):\n", 
				       (unsigned long)token->num_sids));
	for (i = 0; i < token->num_sids; i++) {
		DEBUGADD(dbg_lev, ("  SID[%3lu]: %s\n", (unsigned long)i, 
			   dom_sid_string(mem_ctx, token->sids[i])));
	}

	security_token_debug_privileges(dbg_lev, token);

	talloc_free(mem_ctx);
}

/* These really should be cheaper... */

bool security_token_is_sid(const struct security_token *token, const struct dom_sid *sid)
{
	if (dom_sid_equal(token->user_sid, sid)) {
		return true;
	}
	return false;
}

bool security_token_is_sid_string(const struct security_token *token, const char *sid_string)
{
	bool ret;
	struct dom_sid *sid = dom_sid_parse_talloc(NULL, sid_string);
	if (!sid) return false;

	ret = security_token_is_sid(token, sid);

	talloc_free(sid);
	return ret;
}

bool security_token_is_system(const struct security_token *token) 
{
	return security_token_is_sid_string(token, SID_NT_SYSTEM);
}

bool security_token_is_anonymous(const struct security_token *token) 
{
	return security_token_is_sid_string(token, SID_NT_ANONYMOUS);
}

bool security_token_has_sid(const struct security_token *token, const struct dom_sid *sid)
{
	int i;
	for (i = 0; i < token->num_sids; i++) {
		if (dom_sid_equal(token->sids[i], sid)) {
			return true;
		}
	}
	return false;
}

bool security_token_has_sid_string(const struct security_token *token, const char *sid_string)
{
	bool ret;
	struct dom_sid *sid = dom_sid_parse_talloc(NULL, sid_string);
	if (!sid) return false;

	ret = security_token_has_sid(token, sid);

	talloc_free(sid);
	return ret;
}

bool security_token_has_builtin_administrators(const struct security_token *token)
{
	return security_token_has_sid_string(token, SID_BUILTIN_ADMINISTRATORS);
}

bool security_token_has_nt_authenticated_users(const struct security_token *token)
{
	return security_token_has_sid_string(token, SID_NT_AUTHENTICATED_USERS);
}

bool security_token_has_enterprise_dcs(const struct security_token *token)
{
	return security_token_has_sid_string(token, SID_NT_ENTERPRISE_DCS);
}

enum security_user_level security_session_user_level(struct auth_session_info *session_info,
						     const struct dom_sid *domain_sid)
{
	if (!session_info) {
		return SECURITY_ANONYMOUS;
	}
	
	if (security_token_is_system(session_info->security_token)) {
		return SECURITY_SYSTEM;
	}

	if (security_token_is_anonymous(session_info->security_token)) {
		return SECURITY_ANONYMOUS;
	}

	if (security_token_has_builtin_administrators(session_info->security_token)) {
		return SECURITY_ADMINISTRATOR;
	}

	if (domain_sid &&
	    dom_sid_in_domain(domain_sid, session_info->security_token->user_sid)) {
		uint32_t rid;
		NTSTATUS status = dom_sid_split_rid(NULL, session_info->security_token->user_sid,
						    NULL, &rid);
		if (NT_STATUS_IS_OK(status) && rid == DOMAIN_RID_ENTERPRISE_READONLY_DCS) {
			return SECURITY_RO_DOMAIN_CONTROLLER;
		}
	}

	if (security_token_has_enterprise_dcs(session_info->security_token)) {
		return SECURITY_DOMAIN_CONTROLLER;
	}

	if (security_token_has_nt_authenticated_users(session_info->security_token)) {
		return SECURITY_USER;
	}

	return SECURITY_ANONYMOUS;
}