2 Unix SMB/CIFS implementation.
5 Copyright (C) Stefan Metzmacher 2009
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.
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.
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/>.
22 #include "smbd/smbd.h"
23 #include "smbd/globals.h"
24 #include "../libcli/smb/smb_common.h"
26 #include "../lib/util/tevent_ntstatus.h"
28 static struct tevent_req *smbd_smb2_find_send(TALLOC_CTX *mem_ctx,
29 struct tevent_context *ev,
30 struct smbd_smb2_request *smb2req,
31 uint8_t in_file_info_class,
33 uint32_t in_file_index,
34 uint64_t in_file_id_volatile,
35 uint32_t in_output_buffer_length,
36 const char *in_file_name);
37 static NTSTATUS smbd_smb2_find_recv(struct tevent_req *req,
39 DATA_BLOB *out_output_buffer);
41 static void smbd_smb2_request_find_done(struct tevent_req *subreq);
42 NTSTATUS smbd_smb2_request_process_find(struct smbd_smb2_request *req)
45 const uint8_t *inbody;
46 int i = req->current_idx;
47 uint8_t in_file_info_class;
49 uint32_t in_file_index;
50 uint64_t in_file_id_persistent;
51 uint64_t in_file_id_volatile;
52 uint16_t in_file_name_offset;
53 uint16_t in_file_name_length;
54 DATA_BLOB in_file_name_buffer;
55 char *in_file_name_string;
56 size_t in_file_name_string_size;
57 uint32_t in_output_buffer_length;
58 struct tevent_req *subreq;
61 status = smbd_smb2_request_verify_sizes(req, 0x21);
62 if (!NT_STATUS_IS_OK(status)) {
63 return smbd_smb2_request_error(req, status);
65 inbody = (const uint8_t *)req->in.vector[i+1].iov_base;
67 in_file_info_class = CVAL(inbody, 0x02);
68 in_flags = CVAL(inbody, 0x03);
69 in_file_index = IVAL(inbody, 0x04);
70 in_file_id_persistent = BVAL(inbody, 0x08);
71 in_file_id_volatile = BVAL(inbody, 0x10);
72 in_file_name_offset = SVAL(inbody, 0x18);
73 in_file_name_length = SVAL(inbody, 0x1A);
74 in_output_buffer_length = IVAL(inbody, 0x1C);
76 if (in_file_name_offset == 0 && in_file_name_length == 0) {
78 } else if (in_file_name_offset !=
79 (SMB2_HDR_BODY + req->in.vector[i+1].iov_len)) {
80 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
83 if (in_file_name_length > req->in.vector[i+2].iov_len) {
84 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
87 /* The output header is 8 bytes. */
88 if (in_output_buffer_length <= 8) {
89 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
92 DEBUG(10,("smbd_smb2_request_find_done: in_output_buffer_length = %u\n",
93 (unsigned int)in_output_buffer_length ));
95 /* Take into account the output header. */
96 in_output_buffer_length -= 8;
98 in_file_name_buffer.data = (uint8_t *)req->in.vector[i+2].iov_base;
99 in_file_name_buffer.length = in_file_name_length;
101 ok = convert_string_talloc(req, CH_UTF16, CH_UNIX,
102 in_file_name_buffer.data,
103 in_file_name_buffer.length,
104 &in_file_name_string,
105 &in_file_name_string_size);
107 return smbd_smb2_request_error(req, NT_STATUS_ILLEGAL_CHARACTER);
110 if (in_file_name_buffer.length == 0) {
111 in_file_name_string_size = 0;
114 if (strlen(in_file_name_string) != in_file_name_string_size) {
115 return smbd_smb2_request_error(req, NT_STATUS_OBJECT_NAME_INVALID);
118 if (req->compat_chain_fsp) {
120 } else if (in_file_id_persistent != in_file_id_volatile) {
121 return smbd_smb2_request_error(req, NT_STATUS_FILE_CLOSED);
124 subreq = smbd_smb2_find_send(req,
131 in_output_buffer_length,
132 in_file_name_string);
133 if (subreq == NULL) {
134 return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
136 tevent_req_set_callback(subreq, smbd_smb2_request_find_done, req);
138 return smbd_smb2_request_pending_queue(req, subreq, 500);
141 static void smbd_smb2_request_find_done(struct tevent_req *subreq)
143 struct smbd_smb2_request *req = tevent_req_callback_data(subreq,
144 struct smbd_smb2_request);
147 uint16_t out_output_buffer_offset;
148 DATA_BLOB out_output_buffer = data_blob_null;
150 NTSTATUS error; /* transport error */
152 status = smbd_smb2_find_recv(subreq,
156 if (!NT_STATUS_IS_OK(status)) {
157 error = smbd_smb2_request_error(req, status);
158 if (!NT_STATUS_IS_OK(error)) {
159 smbd_server_connection_terminate(req->sconn,
166 out_output_buffer_offset = SMB2_HDR_BODY + 0x08;
168 outbody = data_blob_talloc(req->out.vector, NULL, 0x08);
169 if (outbody.data == NULL) {
170 error = smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
171 if (!NT_STATUS_IS_OK(error)) {
172 smbd_server_connection_terminate(req->sconn,
179 SSVAL(outbody.data, 0x00, 0x08 + 1); /* struct size */
180 SSVAL(outbody.data, 0x02,
181 out_output_buffer_offset); /* output buffer offset */
182 SIVAL(outbody.data, 0x04,
183 out_output_buffer.length); /* output buffer length */
185 DEBUG(10,("smbd_smb2_request_find_done: out_output_buffer.length = %u\n",
186 (unsigned int)out_output_buffer.length ));
188 outdyn = out_output_buffer;
190 error = smbd_smb2_request_done(req, outbody, &outdyn);
191 if (!NT_STATUS_IS_OK(error)) {
192 smbd_server_connection_terminate(req->sconn,
198 struct smbd_smb2_find_state {
199 struct smbd_smb2_request *smb2req;
200 DATA_BLOB out_output_buffer;
203 static struct tevent_req *smbd_smb2_find_send(TALLOC_CTX *mem_ctx,
204 struct tevent_context *ev,
205 struct smbd_smb2_request *smb2req,
206 uint8_t in_file_info_class,
208 uint32_t in_file_index,
209 uint64_t in_file_id_volatile,
210 uint32_t in_output_buffer_length,
211 const char *in_file_name)
213 struct tevent_req *req;
214 struct smbd_smb2_find_state *state;
215 struct smb_request *smbreq;
216 connection_struct *conn = smb2req->tcon->compat_conn;
219 NTSTATUS empty_status;
225 int last_entry_off = 0;
228 uint32_t dirtype = FILE_ATTRIBUTE_HIDDEN | FILE_ATTRIBUTE_SYSTEM | FILE_ATTRIBUTE_DIRECTORY;
229 bool dont_descend = false;
230 bool ask_sharemode = true;
232 req = tevent_req_create(mem_ctx, &state,
233 struct smbd_smb2_find_state);
237 state->smb2req = smb2req;
238 state->out_output_buffer = data_blob_null;
240 DEBUG(10,("smbd_smb2_find_send: file_id[0x%016llX]\n",
241 (unsigned long long)in_file_id_volatile));
243 smbreq = smbd_smb2_fake_smb_request(smb2req);
244 if (tevent_req_nomem(smbreq, req)) {
245 return tevent_req_post(req, ev);
248 fsp = file_fsp(smbreq, (uint16_t)in_file_id_volatile);
250 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
251 return tevent_req_post(req, ev);
253 if (conn != fsp->conn) {
254 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
255 return tevent_req_post(req, ev);
257 if (smb2req->session->vuid != fsp->vuid) {
258 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
259 return tevent_req_post(req, ev);
262 if (!fsp->is_directory) {
263 tevent_req_nterror(req, NT_STATUS_NOT_SUPPORTED);
264 return tevent_req_post(req, ev);
267 if (strcmp(in_file_name, "") == 0) {
268 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_INVALID);
269 return tevent_req_post(req, ev);
271 if (strcmp(in_file_name, "\\") == 0) {
272 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_INVALID);
273 return tevent_req_post(req, ev);
275 if (strcmp(in_file_name, "/") == 0) {
276 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_INVALID);
277 return tevent_req_post(req, ev);
280 if (in_output_buffer_length > smb2req->sconn->smb2.max_trans) {
281 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
282 return tevent_req_post(req, ev);
285 switch (in_file_info_class) {
286 case SMB2_FIND_DIRECTORY_INFO:
287 info_level = SMB_FIND_FILE_DIRECTORY_INFO;
290 case SMB2_FIND_FULL_DIRECTORY_INFO:
291 info_level = SMB_FIND_FILE_FULL_DIRECTORY_INFO;
294 case SMB2_FIND_BOTH_DIRECTORY_INFO:
295 info_level = SMB_FIND_FILE_BOTH_DIRECTORY_INFO;
298 case SMB2_FIND_NAME_INFO:
299 info_level = SMB_FIND_FILE_NAMES_INFO;
302 case SMB2_FIND_ID_BOTH_DIRECTORY_INFO:
303 info_level = SMB_FIND_ID_BOTH_DIRECTORY_INFO;
306 case SMB2_FIND_ID_FULL_DIRECTORY_INFO:
307 info_level = SMB_FIND_ID_FULL_DIRECTORY_INFO;
311 tevent_req_nterror(req, NT_STATUS_INVALID_INFO_CLASS);
312 return tevent_req_post(req, ev);
315 if (in_flags & SMB2_CONTINUE_FLAG_REOPEN) {
319 if (fsp->dptr == NULL) {
322 wcard_has_wild = ms_has_wild(in_file_name);
324 status = dptr_create(conn,
327 fsp->fsp_name->base_name,
328 false, /* old_handle */
329 false, /* expect_close */
331 in_file_name, /* wcard */
335 if (!NT_STATUS_IS_OK(status)) {
336 tevent_req_nterror(req, status);
337 return tevent_req_post(req, ev);
340 empty_status = NT_STATUS_NO_SUCH_FILE;
342 empty_status = STATUS_NO_MORE_FILES;
345 if (in_flags & SMB2_CONTINUE_FLAG_RESTART) {
346 dptr_SeekDir(fsp->dptr, 0);
349 if (in_flags & SMB2_CONTINUE_FLAG_SINGLE) {
352 max_count = UINT16_MAX;
355 #define DIR_ENTRY_SAFETY_MARGIN 4096
357 state->out_output_buffer = data_blob_talloc(state, NULL,
358 in_output_buffer_length + DIR_ENTRY_SAFETY_MARGIN);
359 if (tevent_req_nomem(state->out_output_buffer.data, req)) {
360 return tevent_req_post(req, ev);
363 state->out_output_buffer.length = 0;
364 pdata = (char *)state->out_output_buffer.data;
367 * end_data must include the safety margin as it's what is
368 * used to determine if pushed strings have been truncated.
370 end_data = pdata + in_output_buffer_length + DIR_ENTRY_SAFETY_MARGIN - 1;
375 DEBUG(8,("smbd_smb2_find_send: dirpath=<%s> dontdescend=<%s>, "
376 "in_output_buffer_length = %u\n",
377 fsp->fsp_name->base_name, lp_dontdescend(SNUM(conn)),
378 (unsigned int)in_output_buffer_length ));
379 if (in_list(fsp->fsp_name->base_name,lp_dontdescend(SNUM(conn)),
380 conn->case_sensitive)) {
384 ask_sharemode = lp_parm_bool(SNUM(conn),
385 "smbd", "search ask sharemode",
390 bool got_exact_match = false;
391 bool out_of_space = false;
392 int space_remaining = in_output_buffer_length - off;
394 SMB_ASSERT(space_remaining >= 0);
396 ok = smbd_dirptr_lanman2_entry(state,
403 false, /* requires_resume_key */
406 8, /* align to 8 bytes */
407 false, /* no padding */
417 off = (int)PTR_DIFF(pdata, base_data);
421 SIVAL(state->out_output_buffer.data, last_entry_off, 0);
422 tevent_req_done(req);
423 return tevent_req_post(req, ev);
424 } else if (out_of_space) {
425 tevent_req_nterror(req, NT_STATUS_INFO_LENGTH_MISMATCH);
426 return tevent_req_post(req, ev);
428 tevent_req_nterror(req, empty_status);
429 return tevent_req_post(req, ev);
434 state->out_output_buffer.length = off;
436 if (num < max_count) {
440 SIVAL(state->out_output_buffer.data, last_entry_off, 0);
441 tevent_req_done(req);
442 return tevent_req_post(req, ev);
445 tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
446 return tevent_req_post(req, ev);
449 static NTSTATUS smbd_smb2_find_recv(struct tevent_req *req,
451 DATA_BLOB *out_output_buffer)
454 struct smbd_smb2_find_state *state = tevent_req_data(req,
455 struct smbd_smb2_find_state);
457 if (tevent_req_is_nterror(req, &status)) {
458 tevent_req_received(req);
462 *out_output_buffer = state->out_output_buffer;
463 talloc_steal(mem_ctx, out_output_buffer->data);
465 tevent_req_received(req);