1/*
2   Unix SMB/CIFS implementation.
3   Core SMB2 server
4
5   Copyright (C) Stefan Metzmacher 2009
6
7   This program is free software; you can redistribute it and/or modify
8   it under the terms of the GNU General Public License as published by
9   the Free Software Foundation; either version 3 of the License, or
10   (at your option) any later version.
11
12   This program is distributed in the hope that it will be useful,
13   but WITHOUT ANY WARRANTY; without even the implied warranty of
14   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15   GNU General Public License for more details.
16
17   You should have received a copy of the GNU General Public License
18   along with this program.  If not, see <http://www.gnu.org/licenses/>.
19*/
20
21#include "includes.h"
22#include "smbd/globals.h"
23#include "../libcli/smb/smb_common.h"
24
25static struct tevent_req *smbd_smb2_setinfo_send(TALLOC_CTX *mem_ctx,
26						 struct tevent_context *ev,
27						 struct smbd_smb2_request *smb2req,
28						 uint8_t in_info_type,
29						 uint8_t in_file_info_class,
30						 DATA_BLOB in_input_buffer,
31						 uint32_t in_additional_information,
32						 uint64_t in_file_id_volatile);
33static NTSTATUS smbd_smb2_setinfo_recv(struct tevent_req *req);
34
35static void smbd_smb2_request_setinfo_done(struct tevent_req *subreq);
36NTSTATUS smbd_smb2_request_process_setinfo(struct smbd_smb2_request *req)
37{
38	const uint8_t *inhdr;
39	const uint8_t *inbody;
40	int i = req->current_idx;
41	size_t expected_body_size = 0x21;
42	size_t body_size;
43	uint8_t in_info_type;
44	uint8_t in_file_info_class;
45	uint16_t in_input_buffer_offset;
46	uint32_t in_input_buffer_length;
47	DATA_BLOB in_input_buffer;
48	uint32_t in_additional_information;
49	uint64_t in_file_id_persistent;
50	uint64_t in_file_id_volatile;
51	struct tevent_req *subreq;
52
53	inhdr = (const uint8_t *)req->in.vector[i+0].iov_base;
54	if (req->in.vector[i+1].iov_len != (expected_body_size & 0xFFFFFFFE)) {
55		return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
56	}
57
58	inbody = (const uint8_t *)req->in.vector[i+1].iov_base;
59
60	body_size = SVAL(inbody, 0x00);
61	if (body_size != expected_body_size) {
62		return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
63	}
64
65	in_info_type			= CVAL(inbody, 0x02);
66	in_file_info_class		= CVAL(inbody, 0x03);
67	in_input_buffer_length		= IVAL(inbody, 0x04);
68	in_input_buffer_offset		= SVAL(inbody, 0x08);
69	/* 0x0A 2 bytes reserved */
70	in_additional_information	= IVAL(inbody, 0x0C);
71	in_file_id_persistent		= BVAL(inbody, 0x10);
72	in_file_id_volatile		= BVAL(inbody, 0x18);
73
74	if (in_input_buffer_offset == 0 && in_input_buffer_length == 0) {
75		/* This is ok */
76	} else if (in_input_buffer_offset !=
77		   (SMB2_HDR_BODY + (body_size & 0xFFFFFFFE))) {
78		return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
79	}
80
81	if (in_input_buffer_length > req->in.vector[i+2].iov_len) {
82		return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
83	}
84
85	in_input_buffer.data = (uint8_t *)req->in.vector[i+2].iov_base;
86	in_input_buffer.length = in_input_buffer_length;
87
88	if (req->compat_chain_fsp) {
89		/* skip check */
90	} else if (in_file_id_persistent != 0) {
91		return smbd_smb2_request_error(req, NT_STATUS_FILE_CLOSED);
92	}
93
94	subreq = smbd_smb2_setinfo_send(req,
95					req->sconn->smb2.event_ctx,
96					req,
97					in_info_type,
98					in_file_info_class,
99					in_input_buffer,
100					in_additional_information,
101					in_file_id_volatile);
102	if (subreq == NULL) {
103		return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
104	}
105	tevent_req_set_callback(subreq, smbd_smb2_request_setinfo_done, req);
106
107	return smbd_smb2_request_pending_queue(req, subreq);
108}
109
110static void smbd_smb2_request_setinfo_done(struct tevent_req *subreq)
111{
112	struct smbd_smb2_request *req = tevent_req_callback_data(subreq,
113					struct smbd_smb2_request);
114	DATA_BLOB outbody;
115	NTSTATUS status;
116	NTSTATUS error; /* transport error */
117
118	status = smbd_smb2_setinfo_recv(subreq);
119	TALLOC_FREE(subreq);
120	if (!NT_STATUS_IS_OK(status)) {
121		error = smbd_smb2_request_error(req, status);
122		if (!NT_STATUS_IS_OK(error)) {
123			smbd_server_connection_terminate(req->sconn,
124							 nt_errstr(error));
125			return;
126		}
127		return;
128	}
129
130	outbody = data_blob_talloc(req->out.vector, NULL, 0x02);
131	if (outbody.data == NULL) {
132		error = smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
133		if (!NT_STATUS_IS_OK(error)) {
134			smbd_server_connection_terminate(req->sconn,
135							 nt_errstr(error));
136			return;
137		}
138		return;
139	}
140
141	SSVAL(outbody.data, 0x00, 0x02);	/* struct size */
142
143	error = smbd_smb2_request_done(req, outbody, NULL);
144	if (!NT_STATUS_IS_OK(error)) {
145		smbd_server_connection_terminate(req->sconn,
146						 nt_errstr(error));
147		return;
148	}
149}
150
151struct smbd_smb2_setinfo_state {
152	struct smbd_smb2_request *smb2req;
153};
154
155static struct tevent_req *smbd_smb2_setinfo_send(TALLOC_CTX *mem_ctx,
156						 struct tevent_context *ev,
157						 struct smbd_smb2_request *smb2req,
158						 uint8_t in_info_type,
159						 uint8_t in_file_info_class,
160						 DATA_BLOB in_input_buffer,
161						 uint32_t in_additional_information,
162						 uint64_t in_file_id_volatile)
163{
164	struct tevent_req *req;
165	struct smbd_smb2_setinfo_state *state;
166	struct smb_request *smbreq;
167	connection_struct *conn = smb2req->tcon->compat_conn;
168	files_struct *fsp;
169
170	req = tevent_req_create(mem_ctx, &state,
171				struct smbd_smb2_setinfo_state);
172	if (req == NULL) {
173		return NULL;
174	}
175	state->smb2req = smb2req;
176
177	DEBUG(10,("smbd_smb2_setinfo_send: file_id[0x%016llX]\n",
178		  (unsigned long long)in_file_id_volatile));
179
180	smbreq = smbd_smb2_fake_smb_request(smb2req);
181	if (tevent_req_nomem(smbreq, req)) {
182		return tevent_req_post(req, ev);
183	}
184
185	fsp = file_fsp(smbreq, (uint16_t)in_file_id_volatile);
186	if (fsp == NULL) {
187		tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
188		return tevent_req_post(req, ev);
189	}
190	if (conn != fsp->conn) {
191		tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
192		return tevent_req_post(req, ev);
193	}
194	if (smb2req->session->vuid != fsp->vuid) {
195		tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
196		return tevent_req_post(req, ev);
197	}
198
199	if (IS_IPC(conn)) {
200		tevent_req_nterror(req, NT_STATUS_NOT_SUPPORTED);
201		return tevent_req_post(req, ev);
202	}
203
204	switch (in_info_type) {
205	case 0x01:/* SMB2_SETINFO_FILE */
206	{
207		uint16_t file_info_level;
208		char *data;
209		int data_size;
210		int ret_size = 0;
211		NTSTATUS status;
212
213
214		file_info_level = in_file_info_class + 1000;
215		if (file_info_level == SMB_FILE_RENAME_INFORMATION) {
216			file_info_level = 0xFF00 + in_file_info_class;
217		}
218
219		if (fsp->is_directory || fsp->fh->fd == -1) {
220			/*
221			 * This is actually a SETFILEINFO on a directory
222			 * handle (returned from an NT SMB). NT5.0 seems
223			 * to do this call. JRA.
224			 */
225			if (INFO_LEVEL_IS_UNIX(file_info_level)) {
226				/* Always do lstat for UNIX calls. */
227				if (SMB_VFS_LSTAT(conn, fsp->fsp_name)) {
228					DEBUG(3,("smbd_smb2_setinfo_send: "
229						 "SMB_VFS_LSTAT of %s failed "
230						 "(%s)\n", fsp_str_dbg(fsp),
231						 strerror(errno)));
232					status = map_nt_error_from_unix(errno);
233					tevent_req_nterror(req, status);
234					return tevent_req_post(req, ev);
235				}
236			} else {
237				if (SMB_VFS_STAT(conn, fsp->fsp_name) != 0) {
238					DEBUG(3,("smbd_smb2_setinfo_send: "
239						 "fileinfo of %s failed (%s)\n",
240						 fsp_str_dbg(fsp),
241						 strerror(errno)));
242					status = map_nt_error_from_unix(errno);
243					tevent_req_nterror(req, status);
244					return tevent_req_post(req, ev);
245				}
246			}
247		} else if (fsp->print_file) {
248			/*
249			 * Doing a DELETE_ON_CLOSE should cancel a print job.
250			 */
251			if ((file_info_level == SMB_SET_FILE_DISPOSITION_INFO)
252			    && in_input_buffer.length >= 1
253			    && CVAL(in_input_buffer.data,0)) {
254				fsp->fh->private_options |= FILE_DELETE_ON_CLOSE;
255
256				DEBUG(3,("smbd_smb2_setinfo_send: "
257					 "Cancelling print job (%s)\n",
258					 fsp_str_dbg(fsp)));
259
260				tevent_req_done(req);
261				return tevent_req_post(req, ev);
262			} else {
263				tevent_req_nterror(req,
264					NT_STATUS_OBJECT_PATH_INVALID);
265				return tevent_req_post(req, ev);
266			}
267		} else {
268			/*
269			 * Original code - this is an open file.
270			 */
271
272			if (SMB_VFS_FSTAT(fsp, &fsp->fsp_name->st) != 0) {
273				DEBUG(3,("smbd_smb2_setinfo_send: fstat "
274					 "of fnum %d failed (%s)\n", fsp->fnum,
275					 strerror(errno)));
276				status = map_nt_error_from_unix(errno);
277				tevent_req_nterror(req, status);
278				return tevent_req_post(req, ev);
279			}
280		}
281
282		data = NULL;
283		data_size = in_input_buffer.length;
284		if (data_size > 0) {
285			data = (char *)SMB_MALLOC_ARRAY(char, data_size);
286			if (tevent_req_nomem(data, req)) {
287
288			}
289			memcpy(data, in_input_buffer.data, data_size);
290		}
291
292		status = smbd_do_setfilepathinfo(conn, smbreq, state,
293						 file_info_level,
294						 fsp,
295						 fsp->fsp_name,
296						 &data,
297						 data_size,
298						 &ret_size);
299		SAFE_FREE(data);
300		if (!NT_STATUS_IS_OK(status)) {
301			if (NT_STATUS_EQUAL(status, NT_STATUS_INVALID_LEVEL)) {
302				status = NT_STATUS_INVALID_INFO_CLASS;
303			}
304			tevent_req_nterror(req, status);
305			return tevent_req_post(req, ev);
306		}
307		break;
308	}
309
310	default:
311		tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
312		return tevent_req_post(req, ev);
313	}
314
315	tevent_req_done(req);
316	return tevent_req_post(req, ev);
317}
318
319static NTSTATUS smbd_smb2_setinfo_recv(struct tevent_req *req)
320{
321	NTSTATUS status;
322
323	if (tevent_req_is_nterror(req, &status)) {
324		tevent_req_received(req);
325		return status;
326	}
327
328	tevent_req_received(req);
329	return NT_STATUS_OK;
330}
331