summaryrefslogtreecommitdiff
path: root/source4/libcli/smb_composite/appendacl.c
blob: b47a41a43b4b2731435acd8ec2aa057d2f26fb1d (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
#include "includes.h"
#include "libcli/raw/libcliraw.h"
#include "libcli/composite/composite.h"
#include "libcli/smb_composite/smb_composite.h"
#include "librpc/gen_ndr/ndr_security.h"

/* the stages of this call */
enum appendacl_stage {APPENDACL_OPENPATH, APPENDACL_GET, 
		       APPENDACL_SET, APPENDACL_GETAGAIN, APPENDACL_CLOSEPATH};

static void appendacl_handler(struct smbcli_request *req);

struct appendacl_state {
	enum appendacl_stage stage;
	struct smb_composite_appendacl *io;

	union smb_open *io_open;
	union smb_setfileinfo *io_setfileinfo;
	union smb_fileinfo *io_fileinfo;

	struct smbcli_request *req;
};


static NTSTATUS appendacl_open(struct composite_context *c, 
			      struct smb_composite_appendacl *io)
{
	struct appendacl_state *state = talloc_get_type(c->private_data, struct appendacl_state);
	struct smbcli_tree *tree = state->req->tree;
	NTSTATUS status;

	status = smb_raw_open_recv(state->req, c, state->io_open);
	NT_STATUS_NOT_OK_RETURN(status);

	/* setup structures for getting fileinfo */
	state->io_fileinfo = talloc(c, union smb_fileinfo);
	NT_STATUS_HAVE_NO_MEMORY(state->io_fileinfo);
	
	state->io_fileinfo->query_secdesc.level = RAW_FILEINFO_SEC_DESC;
	state->io_fileinfo->query_secdesc.in.fnum = state->io_open->ntcreatex.out.fnum;
	state->io_fileinfo->query_secdesc.secinfo_flags = SECINFO_DACL;

	state->req = smb_raw_fileinfo_send(tree, state->io_fileinfo);
	NT_STATUS_HAVE_NO_MEMORY(state->req);

	/* set the handler */
	state->req->async.fn = appendacl_handler;
	state->req->async.private = c;
	state->stage = APPENDACL_GET;
	
	talloc_free (state->io_open);

	return NT_STATUS_OK;
}

static NTSTATUS appendacl_get(struct composite_context *c, 
			       struct smb_composite_appendacl *io)
{
	struct appendacl_state *state = talloc_get_type(c->private_data, struct appendacl_state);
	struct smbcli_tree *tree = state->req->tree;
	int i;
	NTSTATUS status;
	
	status = smb_raw_fileinfo_recv(state->req, state->io_fileinfo, state->io_fileinfo);
	NT_STATUS_NOT_OK_RETURN(status);
	
	/* setup structures for setting fileinfo */
	state->io_setfileinfo = talloc(c, union smb_setfileinfo);
	NT_STATUS_HAVE_NO_MEMORY(state->io_setfileinfo);
	
	state->io_setfileinfo->set_secdesc.level            = RAW_SFILEINFO_SEC_DESC;
	state->io_setfileinfo->set_secdesc.file.fnum        = state->io_fileinfo->query_secdesc.in.fnum;
	
	state->io_setfileinfo->set_secdesc.in.secinfo_flags = SECINFO_DACL;
	state->io_setfileinfo->set_secdesc.in.sd            = state->io_fileinfo->query_secdesc.out.sd;
	talloc_steal(state->io_setfileinfo, state->io_setfileinfo->set_secdesc.in.sd);

	/* append all aces from io->in.sd->dacl to new security descriptor */
	if (io->in.sd->dacl != NULL) {
		for (i = 0; i < io->in.sd->dacl->num_aces; i++) {
			security_descriptor_dacl_add(state->io_setfileinfo->set_secdesc.in.sd,
						     &(io->in.sd->dacl->aces[i]));
		}
	}

	status = smb_raw_setfileinfo(tree, state->io_setfileinfo);
	NT_STATUS_NOT_OK_RETURN(status);

	state->req = smb_raw_setfileinfo_send(tree, state->io_setfileinfo);
	NT_STATUS_HAVE_NO_MEMORY(state->req);

	/* call handler when done setting new security descriptor on file */
	state->req->async.fn = appendacl_handler;
	state->req->async.private = c;
	state->stage = APPENDACL_SET;

	talloc_free (state->io_fileinfo);

	return NT_STATUS_OK;
}

static NTSTATUS appendacl_set(struct composite_context *c, 
			      struct smb_composite_appendacl *io)
{
	struct appendacl_state *state = talloc_get_type(c->private_data, struct appendacl_state);
	struct smbcli_tree *tree = state->req->tree;
	NTSTATUS status;

	status = smbcli_request_simple_recv(state->req);
	NT_STATUS_NOT_OK_RETURN(status);

	/* setup structures for getting fileinfo */
	state->io_fileinfo = talloc(c, union smb_fileinfo);
	NT_STATUS_HAVE_NO_MEMORY(state->io_fileinfo);
	

	state->io_fileinfo->query_secdesc.level = RAW_FILEINFO_SEC_DESC;
	state->io_fileinfo->query_secdesc.in.fnum = state->io_setfileinfo->set_secdesc.file.fnum;
	state->io_fileinfo->query_secdesc.secinfo_flags = SECINFO_DACL;

	state->req = smb_raw_fileinfo_send(tree, state->io_fileinfo);
	NT_STATUS_HAVE_NO_MEMORY(state->req);

	/* set the handler */
	state->req->async.fn = appendacl_handler;
	state->req->async.private = c;
	state->stage = APPENDACL_GETAGAIN;
	
	talloc_free (state->io_setfileinfo);

	return NT_STATUS_OK;
}


static NTSTATUS appendacl_getagain(struct composite_context *c, 
				   struct smb_composite_appendacl *io)
{
	struct appendacl_state *state = talloc_get_type(c->private_data, struct appendacl_state);
	struct smbcli_tree *tree = state->req->tree;
	union smb_close *io_close;
	NTSTATUS status;
	
	status = smb_raw_fileinfo_recv(state->req, c, state->io_fileinfo);
	NT_STATUS_NOT_OK_RETURN(status);

	io->out.sd = state->io_fileinfo->query_secdesc.out.sd;

	/* setup structures for close */
	io_close = talloc(c, union smb_close);
	NT_STATUS_HAVE_NO_MEMORY(io_close);
	
	io_close->close.level = RAW_CLOSE_CLOSE;
	io_close->close.in.fnum = state->io_fileinfo->query_secdesc.in.fnum;
	io_close->close.in.write_time = 0;

	state->req = smb_raw_close_send(tree, io_close);
	NT_STATUS_HAVE_NO_MEMORY(state->req);

	/* call the handler */
	state->req->async.fn = appendacl_handler;
	state->req->async.private = c;
	state->stage = APPENDACL_CLOSEPATH;

	talloc_free (state->io_fileinfo);

	return NT_STATUS_OK;
}



static NTSTATUS appendacl_close(struct composite_context *c, 
				struct smb_composite_appendacl *io)
{
	struct appendacl_state *state = talloc_get_type(c->private_data, struct appendacl_state);
	NTSTATUS status;

	status = smbcli_request_simple_recv(state->req);
	NT_STATUS_NOT_OK_RETURN(status);
	
	c->state = COMPOSITE_STATE_DONE;

	return NT_STATUS_OK;
}

/*
  handler for completion of a sub-request in appendacl
*/
static void appendacl_handler(struct smbcli_request *req)
{
	struct composite_context *c = req->async.private;
	struct appendacl_state *state = talloc_get_type(c->private_data, struct appendacl_state);

	/* when this handler is called, the stage indicates what
	   call has just finished */
	switch (state->stage) {
	case APPENDACL_OPENPATH:
		c->status = appendacl_open(c, state->io);
		break;

	case APPENDACL_GET:
		c->status = appendacl_get(c, state->io);
		break;

	case APPENDACL_SET:
		c->status = appendacl_set(c, state->io);
		break;

	case APPENDACL_GETAGAIN:
		c->status = appendacl_getagain(c, state->io);
		break;

	case APPENDACL_CLOSEPATH:
		c->status = appendacl_close(c, state->io);
		break;
	}

	/* We should get here if c->state >= SMBCLI_REQUEST_DONE */
	if (!NT_STATUS_IS_OK(c->status)) {
		c->state = COMPOSITE_STATE_ERROR;
	}

	if (c->state >= COMPOSITE_STATE_DONE &&
	    c->async.fn) {
		c->async.fn(c);
	}
}


/*
  composite appendacl call - does an open followed by a number setfileinfo,
  after that new acls are read with fileinfo, followed by a close
*/
struct composite_context *smb_composite_appendacl_send(struct smbcli_tree *tree, 
							struct smb_composite_appendacl *io)
{
	struct composite_context *c;
	struct appendacl_state *state;

	c = talloc_zero(tree, struct composite_context);
	if (c == NULL) goto failed;

	state = talloc(c, struct appendacl_state);
	if (state == NULL) goto failed;

	state->io = io;

	c->private_data = state;
	c->state = COMPOSITE_STATE_IN_PROGRESS;
	c->event_ctx = tree->session->transport->socket->event.ctx;

	/* setup structures for opening file */
	state->io_open = talloc_zero(c, union smb_open);
	if (state->io_open == NULL) goto failed;
	
	state->io_open->ntcreatex.level               = RAW_OPEN_NTCREATEX;
	state->io_open->ntcreatex.in.root_fid = 0;
	state->io_open->ntcreatex.in.flags            = 0;
	state->io_open->ntcreatex.in.access_mask      = SEC_FLAG_MAXIMUM_ALLOWED;
	state->io_open->ntcreatex.in.file_attr        = FILE_ATTRIBUTE_NORMAL;
	state->io_open->ntcreatex.in.share_access     = NTCREATEX_SHARE_ACCESS_READ | NTCREATEX_SHARE_ACCESS_WRITE;
	state->io_open->ntcreatex.in.open_disposition = NTCREATEX_DISP_OPEN;
	state->io_open->ntcreatex.in.impersonation    = NTCREATEX_IMPERSONATION_ANONYMOUS;
	state->io_open->ntcreatex.in.security_flags   = 0;
	state->io_open->ntcreatex.in.fname            = io->in.fname;

	/* send the open on its way */
	state->req = smb_raw_open_send(tree, state->io_open);
	if (state->req == NULL) goto failed;

	/* setup the callback handler */
	state->req->async.fn = appendacl_handler;
	state->req->async.private = c;
	state->stage = APPENDACL_OPENPATH;

	return c;

failed:
	talloc_free(c);
	return NULL;
}


/*
  composite appendacl call - recv side
*/
NTSTATUS smb_composite_appendacl_recv(struct composite_context *c, TALLOC_CTX *mem_ctx)
{
	NTSTATUS status;

	status = composite_wait(c);

	if (NT_STATUS_IS_OK(status)) {
		struct appendacl_state *state = talloc_get_type(c->private_data, struct appendacl_state);
		state->io->out.sd = security_descriptor_copy (mem_ctx, state->io->out.sd);
	}

	talloc_free(c);
	return status;
}


/*
  composite appendacl call - sync interface
*/
NTSTATUS smb_composite_appendacl(struct smbcli_tree *tree, 
				TALLOC_CTX *mem_ctx,
				struct smb_composite_appendacl *io)
{
	struct composite_context *c = smb_composite_appendacl_send(tree, io);
	return smb_composite_appendacl_recv(c, mem_ctx);
}