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s4-smbtorture: add ndr test for nbt_netlogon_packet to avoid future regressions.
[Samba/gebeck_regimport.git] / source3 / smbd / smb2_find.c
blob9b1179f1f6f6980f4067a71cafcd5fed16fc7cc5
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/smbd.h"
23 #include "smbd/globals.h"
24 #include "../libcli/smb/smb_common.h"
25 #include "trans2.h"
26 #include "../lib/util/tevent_ntstatus.h"
27
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,
32 uint8_t in_flags,
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,
38 TALLOC_CTX *mem_ctx,
39 DATA_BLOB *out_output_buffer);
40
41 static void smbd_smb2_request_find_done(struct tevent_req *subreq);
42 NTSTATUS smbd_smb2_request_process_find(struct smbd_smb2_request *req)
43 {
44 NTSTATUS status;
45 const uint8_t *inbody;
46 int i = req->current_idx;
47 uint8_t in_file_info_class;
48 uint8_t in_flags;
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;
59 bool ok;
60
61 status = smbd_smb2_request_verify_sizes(req, 0x21);
62 if (!NT_STATUS_IS_OK(status)) {
63 return smbd_smb2_request_error(req, status);
64 }
65 inbody = (const uint8_t *)req->in.vector[i+1].iov_base;
66
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);
75
76 if (in_file_name_offset == 0 && in_file_name_length == 0) {
77 /* This is ok */
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);
81 }
82
83 if (in_file_name_length > req->in.vector[i+2].iov_len) {
84 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
85 }
86
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);
90 }
91
92 DEBUG(10,("smbd_smb2_request_find_done: in_output_buffer_length = %u\n",
93 (unsigned int)in_output_buffer_length ));
94
95 /* Take into account the output header. */
96 in_output_buffer_length -= 8;
97
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;
100
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);
106 if (!ok) {
107 return smbd_smb2_request_error(req, NT_STATUS_ILLEGAL_CHARACTER);
108 }
109
110 if (in_file_name_buffer.length == 0) {
111 in_file_name_string_size = 0;
112 }
113
114 if (strlen(in_file_name_string) != in_file_name_string_size) {
115 return smbd_smb2_request_error(req, NT_STATUS_OBJECT_NAME_INVALID);
116 }
117
118 if (req->compat_chain_fsp) {
119 /* skip check */
120 } else if (in_file_id_persistent != in_file_id_volatile) {
121 return smbd_smb2_request_error(req, NT_STATUS_FILE_CLOSED);
122 }
123
124 subreq = smbd_smb2_find_send(req,
125 req->sconn->smb2.event_ctx,
126 req,
127 in_file_info_class,
128 in_flags,
129 in_file_index,
130 in_file_id_volatile,
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);
135 }
136 tevent_req_set_callback(subreq, smbd_smb2_request_find_done, req);
137
138 return smbd_smb2_request_pending_queue(req, subreq, 500);
139 }
140
141 static void smbd_smb2_request_find_done(struct tevent_req *subreq)
142 {
143 struct smbd_smb2_request *req = tevent_req_callback_data(subreq,
144 struct smbd_smb2_request);
145 int i = req->current_idx;
146 uint8_t *outhdr;
147 DATA_BLOB outbody;
148 DATA_BLOB outdyn;
149 uint16_t out_output_buffer_offset;
150 DATA_BLOB out_output_buffer = data_blob_null;
151 NTSTATUS status;
152 NTSTATUS error; /* transport error */
153
154 status = smbd_smb2_find_recv(subreq,
155 req,
156 &out_output_buffer);
157 TALLOC_FREE(subreq);
158 if (!NT_STATUS_IS_OK(status)) {
159 error = smbd_smb2_request_error(req, status);
160 if (!NT_STATUS_IS_OK(error)) {
161 smbd_server_connection_terminate(req->sconn,
162 nt_errstr(error));
163 return;
164 }
165 return;
166 }
167
168 out_output_buffer_offset = SMB2_HDR_BODY + 0x08;
169
170 outhdr = (uint8_t *)req->out.vector[i].iov_base;
171
172 outbody = data_blob_talloc(req->out.vector, NULL, 0x08);
173 if (outbody.data == NULL) {
174 error = smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
175 if (!NT_STATUS_IS_OK(error)) {
176 smbd_server_connection_terminate(req->sconn,
177 nt_errstr(error));
178 return;
179 }
180 return;
181 }
182
183 SSVAL(outbody.data, 0x00, 0x08 + 1); /* struct size */
184 SSVAL(outbody.data, 0x02,
185 out_output_buffer_offset); /* output buffer offset */
186 SIVAL(outbody.data, 0x04,
187 out_output_buffer.length); /* output buffer length */
188
189 DEBUG(10,("smbd_smb2_request_find_done: out_output_buffer.length = %u\n",
190 (unsigned int)out_output_buffer.length ));
191
192 outdyn = out_output_buffer;
193
194 error = smbd_smb2_request_done(req, outbody, &outdyn);
195 if (!NT_STATUS_IS_OK(error)) {
196 smbd_server_connection_terminate(req->sconn,
197 nt_errstr(error));
198 return;
199 }
200 }
201
202 struct smbd_smb2_find_state {
203 struct smbd_smb2_request *smb2req;
204 DATA_BLOB out_output_buffer;
205 };
206
207 static struct tevent_req *smbd_smb2_find_send(TALLOC_CTX *mem_ctx,
208 struct tevent_context *ev,
209 struct smbd_smb2_request *smb2req,
210 uint8_t in_file_info_class,
211 uint8_t in_flags,
212 uint32_t in_file_index,
213 uint64_t in_file_id_volatile,
214 uint32_t in_output_buffer_length,
215 const char *in_file_name)
216 {
217 struct tevent_req *req;
218 struct smbd_smb2_find_state *state;
219 struct smb_request *smbreq;
220 connection_struct *conn = smb2req->tcon->compat_conn;
221 files_struct *fsp;
222 NTSTATUS status;
223 NTSTATUS empty_status;
224 uint32_t info_level;
225 uint32_t max_count;
226 char *pdata;
227 char *base_data;
228 char *end_data;
229 int last_entry_off = 0;
230 int off = 0;
231 uint32_t num = 0;
232 uint32_t dirtype = FILE_ATTRIBUTE_HIDDEN | FILE_ATTRIBUTE_SYSTEM | FILE_ATTRIBUTE_DIRECTORY;
233 bool dont_descend = false;
234 bool ask_sharemode = true;
235
236 req = tevent_req_create(mem_ctx, &state,
237 struct smbd_smb2_find_state);
238 if (req == NULL) {
239 return NULL;
240 }
241 state->smb2req = smb2req;
242 state->out_output_buffer = data_blob_null;
243
244 DEBUG(10,("smbd_smb2_find_send: file_id[0x%016llX]\n",
245 (unsigned long long)in_file_id_volatile));
246
247 smbreq = smbd_smb2_fake_smb_request(smb2req);
248 if (tevent_req_nomem(smbreq, req)) {
249 return tevent_req_post(req, ev);
250 }
251
252 fsp = file_fsp(smbreq, (uint16_t)in_file_id_volatile);
253 if (fsp == NULL) {
254 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
255 return tevent_req_post(req, ev);
256 }
257 if (conn != fsp->conn) {
258 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
259 return tevent_req_post(req, ev);
260 }
261 if (smb2req->session->vuid != fsp->vuid) {
262 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
263 return tevent_req_post(req, ev);
264 }
265
266 if (!fsp->is_directory) {
267 tevent_req_nterror(req, NT_STATUS_NOT_SUPPORTED);
268 return tevent_req_post(req, ev);
269 }
270
271 if (strcmp(in_file_name, "") == 0) {
272 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_INVALID);
273 return tevent_req_post(req, ev);
274 }
275 if (strcmp(in_file_name, "\\") == 0) {
276 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_INVALID);
277 return tevent_req_post(req, ev);
278 }
279 if (strcmp(in_file_name, "/") == 0) {
280 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_INVALID);
281 return tevent_req_post(req, ev);
282 }
283
284 if (in_output_buffer_length > smb2req->sconn->smb2.max_trans) {
285 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
286 return tevent_req_post(req, ev);
287 }
288
289 switch (in_file_info_class) {
290 case SMB2_FIND_DIRECTORY_INFO:
291 info_level = SMB_FIND_FILE_DIRECTORY_INFO;
292 break;
293
294 case SMB2_FIND_FULL_DIRECTORY_INFO:
295 info_level = SMB_FIND_FILE_FULL_DIRECTORY_INFO;
296 break;
297
298 case SMB2_FIND_BOTH_DIRECTORY_INFO:
299 info_level = SMB_FIND_FILE_BOTH_DIRECTORY_INFO;
300 break;
301
302 case SMB2_FIND_NAME_INFO:
303 info_level = SMB_FIND_FILE_NAMES_INFO;
304 break;
305
306 case SMB2_FIND_ID_BOTH_DIRECTORY_INFO:
307 info_level = SMB_FIND_ID_BOTH_DIRECTORY_INFO;
308 break;
309
310 case SMB2_FIND_ID_FULL_DIRECTORY_INFO:
311 info_level = SMB_FIND_ID_FULL_DIRECTORY_INFO;
312 break;
313
314 default:
315 tevent_req_nterror(req, NT_STATUS_INVALID_INFO_CLASS);
316 return tevent_req_post(req, ev);
317 }
318
319 if (in_flags & SMB2_CONTINUE_FLAG_REOPEN) {
320 dptr_CloseDir(fsp);
321 }
322
323 if (fsp->dptr == NULL) {
324 bool wcard_has_wild;
325
326 wcard_has_wild = ms_has_wild(in_file_name);
327
328 status = dptr_create(conn,
329 fsp,
330 fsp->fsp_name->base_name,
331 false, /* old_handle */
332 false, /* expect_close */
333 0, /* spid */
334 in_file_name, /* wcard */
335 wcard_has_wild,
336 dirtype,
337 &fsp->dptr);
338 if (!NT_STATUS_IS_OK(status)) {
339 tevent_req_nterror(req, status);
340 return tevent_req_post(req, ev);
341 }
342
343 empty_status = NT_STATUS_NO_SUCH_FILE;
344 } else {
345 empty_status = STATUS_NO_MORE_FILES;
346 }
347
348 if (in_flags & SMB2_CONTINUE_FLAG_RESTART) {
349 dptr_SeekDir(fsp->dptr, 0);
350 }
351
352 if (in_flags & SMB2_CONTINUE_FLAG_SINGLE) {
353 max_count = 1;
354 } else {
355 max_count = UINT16_MAX;
356 }
357
358 #define DIR_ENTRY_SAFETY_MARGIN 4096
359
360 state->out_output_buffer = data_blob_talloc(state, NULL,
361 in_output_buffer_length + DIR_ENTRY_SAFETY_MARGIN);
362 if (tevent_req_nomem(state->out_output_buffer.data, req)) {
363 return tevent_req_post(req, ev);
364 }
365
366 state->out_output_buffer.length = 0;
367 pdata = (char *)state->out_output_buffer.data;
368 base_data = pdata;
369 /*
370 * end_data must include the safety margin as it's what is
371 * used to determine if pushed strings have been truncated.
372 */
373 end_data = pdata + in_output_buffer_length + DIR_ENTRY_SAFETY_MARGIN - 1;
374 last_entry_off = 0;
375 off = 0;
376 num = 0;
377
378 DEBUG(8,("smbd_smb2_find_send: dirpath=<%s> dontdescend=<%s>, "
379 "in_output_buffer_length = %u\n",
380 fsp->fsp_name->base_name, lp_dontdescend(SNUM(conn)),
381 (unsigned int)in_output_buffer_length ));
382 if (in_list(fsp->fsp_name->base_name,lp_dontdescend(SNUM(conn)),
383 conn->case_sensitive)) {
384 dont_descend = true;
385 }
386
387 ask_sharemode = lp_parm_bool(SNUM(conn),
388 "smbd", "search ask sharemode",
389 true);
390
391 while (true) {
392 bool ok;
393 bool got_exact_match = false;
394 bool out_of_space = false;
395 int space_remaining = in_output_buffer_length - off;
396
397 SMB_ASSERT(space_remaining >= 0);
398
399 ok = smbd_dirptr_lanman2_entry(state,
400 conn,
401 fsp->dptr,
402 smbreq->flags2,
403 in_file_name,
404 dirtype,
405 info_level,
406 false, /* requires_resume_key */
407 dont_descend,
408 ask_sharemode,
409 8, /* align to 8 bytes */
410 false, /* no padding */
411 &pdata,
412 base_data,
413 end_data,
414 space_remaining,
415 &out_of_space,
416 &got_exact_match,
417 &last_entry_off,
418 NULL);
419
420 off = (int)PTR_DIFF(pdata, base_data);
421
422 if (!ok) {
423 if (num > 0) {
424 SIVAL(state->out_output_buffer.data, last_entry_off, 0);
425 tevent_req_done(req);
426 return tevent_req_post(req, ev);
427 } else if (out_of_space) {
428 tevent_req_nterror(req, NT_STATUS_INFO_LENGTH_MISMATCH);
429 return tevent_req_post(req, ev);
430 } else {
431 tevent_req_nterror(req, empty_status);
432 return tevent_req_post(req, ev);
433 }
434 }
435
436 num++;
437 state->out_output_buffer.length = off;
438
439 if (num < max_count) {
440 continue;
441 }
442
443 SIVAL(state->out_output_buffer.data, last_entry_off, 0);
444 tevent_req_done(req);
445 return tevent_req_post(req, ev);
446 }
447
448 tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
449 return tevent_req_post(req, ev);
450 }
451
452 static NTSTATUS smbd_smb2_find_recv(struct tevent_req *req,
453 TALLOC_CTX *mem_ctx,
454 DATA_BLOB *out_output_buffer)
455 {
456 NTSTATUS status;
457 struct smbd_smb2_find_state *state = tevent_req_data(req,
458 struct smbd_smb2_find_state);
459
460 if (tevent_req_is_nterror(req, &status)) {
461 tevent_req_received(req);
462 return status;
463 }
464
465 *out_output_buffer = state->out_output_buffer;
466 talloc_steal(mem_ctx, out_output_buffer->data);
467
468 tevent_req_received(req);
469 return NT_STATUS_OK;
470 }
reg import