summaryrefslogtreecommitdiff
path: root/source4/libcli/util/clilsa.c
blob: f5e49dd577558e292093d8a3f48fea1e0e8f67ed (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
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
/* 
   Unix SMB/CIFS implementation.

   lsa calls for file sharing connections

   Copyright (C) Andrew Tridgell 2004
   
   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 2 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, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

/*
  when dealing with ACLs the file sharing client code needs to
  sometimes make LSA RPC calls. This code provides an easy interface
  for doing those calls.  
*/

#include "includes.h"
#include "libcli/raw/libcliraw.h"
#include "libcli/libcli.h"
#include "libcli/security/security.h"
#include "librpc/gen_ndr/ndr_security.h"
#include "librpc/gen_ndr/ndr_lsa.h"
#include "librpc/gen_ndr/ndr_lsa_c.h"

struct smblsa_state {
	struct dcerpc_pipe *pipe;
	struct smbcli_tree *ipc_tree;
	struct policy_handle handle;
};

/*
  establish the lsa pipe connection
*/
static NTSTATUS smblsa_connect(struct smbcli_state *cli)
{
	struct smblsa_state *lsa;
	NTSTATUS status;
	struct lsa_OpenPolicy r;
	uint16_t system_name = '\\';
	union smb_tcon tcon;
	struct lsa_ObjectAttribute attr;
	struct lsa_QosInfo qos;

	if (cli->lsa != NULL) {
		return NT_STATUS_OK;
	}

	lsa = talloc(cli, struct smblsa_state);
	if (lsa == NULL) {
		return NT_STATUS_NO_MEMORY;
	}

	lsa->ipc_tree = smbcli_tree_init(cli->session, lsa, False);
	if (lsa->ipc_tree == NULL) {
		return NT_STATUS_NO_MEMORY;
	}

	/* connect to IPC$ */
	tcon.generic.level = RAW_TCON_TCONX;
	tcon.tconx.in.flags = 0;
	tcon.tconx.in.password = data_blob(NULL, 0);
	tcon.tconx.in.path = "ipc$";
	tcon.tconx.in.device = "IPC";	
	status = smb_raw_tcon(lsa->ipc_tree, lsa, &tcon);
	if (!NT_STATUS_IS_OK(status)) {
		talloc_free(lsa);
		return status;
	}
	lsa->ipc_tree->tid = tcon.tconx.out.tid;

	lsa->pipe = dcerpc_pipe_init(lsa, cli->transport->socket->event.ctx);
	if (lsa->pipe == NULL) {
		talloc_free(lsa);
		return NT_STATUS_NO_MEMORY;
	}

	/* open the LSA pipe */
	status = dcerpc_pipe_open_smb(lsa->pipe->conn, lsa->ipc_tree, DCERPC_LSARPC_NAME);
	if (!NT_STATUS_IS_OK(status)) {
		talloc_free(lsa);
		return status;
	}

	/* bind to the LSA pipe */
	status = dcerpc_bind_auth_none(lsa->pipe, &dcerpc_table_lsarpc);
	if (!NT_STATUS_IS_OK(status)) {
		talloc_free(lsa);
                return status;
        }


	/* open a lsa policy handle */
	qos.len = 0;
	qos.impersonation_level = 2;
	qos.context_mode = 1;
	qos.effective_only = 0;

	attr.len = 0;
	attr.root_dir = NULL;
	attr.object_name = NULL;
	attr.attributes = 0;
	attr.sec_desc = NULL;
	attr.sec_qos = &qos;

	r.in.system_name = &system_name;
	r.in.attr = &attr;
	r.in.access_mask = SEC_FLAG_MAXIMUM_ALLOWED;
	r.out.handle = &lsa->handle;

	status = dcerpc_lsa_OpenPolicy(lsa->pipe, lsa, &r);
	if (!NT_STATUS_IS_OK(status)) {
		talloc_free(lsa);
		return status;
	}

	cli->lsa = lsa;
	
	return NT_STATUS_OK;
}


/*
  return the set of privileges for the given sid
*/
NTSTATUS smblsa_sid_privileges(struct smbcli_state *cli, struct dom_sid *sid, 
			       TALLOC_CTX *mem_ctx,
			       struct lsa_RightSet *rights)
{
	NTSTATUS status;
	struct lsa_EnumAccountRights r;

	status = smblsa_connect(cli);
	if (!NT_STATUS_IS_OK(status)) {
		return status;
	}

	r.in.handle = &cli->lsa->handle;
	r.in.sid = sid;
	r.out.rights = rights;

	return dcerpc_lsa_EnumAccountRights(cli->lsa->pipe, mem_ctx, &r);
}


/*
  check if a named sid has a particular named privilege
*/
NTSTATUS smblsa_sid_check_privilege(struct smbcli_state *cli, 
				    const char *sid_str,
				    const char *privilege)
{
	struct lsa_RightSet rights;
	NTSTATUS status;
	TALLOC_CTX *mem_ctx = talloc_new(cli);
	struct dom_sid *sid;
	unsigned i;

	sid = dom_sid_parse_talloc(mem_ctx, sid_str);
	if (sid == NULL) {
		talloc_free(mem_ctx);
		return NT_STATUS_INVALID_SID;
	}

	status = smblsa_sid_privileges(cli, sid, mem_ctx, &rights);
	if (!NT_STATUS_IS_OK(status)) {
		talloc_free(mem_ctx);
		return status;
	}

	for (i=0;i<rights.count;i++) {
		if (strcmp(rights.names[i].string, privilege) == 0) {
			talloc_free(mem_ctx);
			return NT_STATUS_OK;
		}
	}

	talloc_free(mem_ctx);
	return NT_STATUS_NOT_FOUND;
}


/*
  lookup a SID, returning its name
*/
NTSTATUS smblsa_lookup_sid(struct smbcli_state *cli, 
			   const char *sid_str,
			   TALLOC_CTX *mem_ctx,
			   const char **name)
{
	struct lsa_LookupSids r;
	struct lsa_TransNameArray names;
	struct lsa_SidArray sids;
	uint32_t count = 1;
	NTSTATUS status;
	struct dom_sid *sid;
	TALLOC_CTX *mem_ctx2 = talloc_new(mem_ctx);

	status = smblsa_connect(cli);
	if (!NT_STATUS_IS_OK(status)) {
		return status;
	}

	sid = dom_sid_parse_talloc(mem_ctx2, sid_str);
	if (sid == NULL) {
		return NT_STATUS_INVALID_SID;
	}

	names.count = 0;
	names.names = NULL;

	sids.num_sids = 1;
	sids.sids = talloc(mem_ctx2, struct lsa_SidPtr);
	sids.sids[0].sid = sid;

	r.in.handle = &cli->lsa->handle;
	r.in.sids = &sids;
	r.in.names = &names;
	r.in.level = 1;
	r.in.count = &count;
	r.out.count = &count;
	r.out.names = &names;

	status = dcerpc_lsa_LookupSids(cli->lsa->pipe, mem_ctx2, &r);
	if (!NT_STATUS_IS_OK(status)) {
		talloc_free(mem_ctx2);
		return status;
	}
	if (names.count != 1) {
		talloc_free(mem_ctx2);
		return NT_STATUS_UNSUCCESSFUL;
	}

	(*name) = talloc_asprintf(mem_ctx, "%s\\%s", 
				  r.out.domains->domains[0].name.string,
				  names.names[0].name.string);

	talloc_free(mem_ctx2);

	return NT_STATUS_OK;	
}

/*
  lookup a name, returning its sid
*/
NTSTATUS smblsa_lookup_name(struct smbcli_state *cli, 
			    const char *name,
			    TALLOC_CTX *mem_ctx,
			    const char **sid_str)
{
	struct lsa_LookupNames r;
	struct lsa_TransSidArray sids;
	struct lsa_String names;
	uint32_t count = 1;
	NTSTATUS status;
	struct dom_sid *sid;
	TALLOC_CTX *mem_ctx2 = talloc_new(mem_ctx);
	uint32_t rid;

	status = smblsa_connect(cli);
	if (!NT_STATUS_IS_OK(status)) {
		return status;
	}

	sids.count = 0;
	sids.sids = NULL;

	names.string = name;

	r.in.handle = &cli->lsa->handle;
	r.in.num_names = 1;
	r.in.names = &names;
	r.in.sids = &sids;
	r.in.level = 1;
	r.in.count = &count;
	r.out.count = &count;
	r.out.sids = &sids;

	status = dcerpc_lsa_LookupNames(cli->lsa->pipe, mem_ctx2, &r);
	if (!NT_STATUS_IS_OK(status)) {
		talloc_free(mem_ctx2);
		return status;
	}
	if (sids.count != 1) {
		talloc_free(mem_ctx2);
		return NT_STATUS_UNSUCCESSFUL;
	}

	sid = r.out.domains->domains[0].sid;
	rid = sids.sids[0].rid;
	
	(*sid_str) = talloc_asprintf(mem_ctx, "%s-%u", 
				     dom_sid_string(mem_ctx2, sid), rid);

	talloc_free(mem_ctx2);

	return NT_STATUS_OK;	
}


/*
  add a set of privileges to the given sid
*/
NTSTATUS smblsa_sid_add_privileges(struct smbcli_state *cli, struct dom_sid *sid, 
				   TALLOC_CTX *mem_ctx,
				   struct lsa_RightSet *rights)
{
	NTSTATUS status;
	struct lsa_AddAccountRights r;

	status = smblsa_connect(cli);
	if (!NT_STATUS_IS_OK(status)) {
		return status;
	}

	r.in.handle = &cli->lsa->handle;
	r.in.sid = sid;
	r.in.rights = rights;

	return dcerpc_lsa_AddAccountRights(cli->lsa->pipe, mem_ctx, &r);
}

/*
  remove a set of privileges from the given sid
*/
NTSTATUS smblsa_sid_del_privileges(struct smbcli_state *cli, struct dom_sid *sid, 
				   TALLOC_CTX *mem_ctx,
				   struct lsa_RightSet *rights)
{
	NTSTATUS status;
	struct lsa_RemoveAccountRights r;

	status = smblsa_connect(cli);
	if (!NT_STATUS_IS_OK(status)) {
		return status;
	}

	r.in.handle = &cli->lsa->handle;
	r.in.sid = sid;
	r.in.unknown = 0;
	r.in.rights = rights;

	return dcerpc_lsa_RemoveAccountRights(cli->lsa->pipe, mem_ctx, &r);
}