s3:smbd: s/struct timed_event/struct tevent_timer
[Samba/gebeck_regimport.git] / source3 / smbd / smb2_find.c
blobc2c0559371ee3e1153416388481e0ca96820e0ad
1 /*
2 Unix SMB/CIFS implementation.
3 Core SMB2 server
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/>.
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"
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 struct files_struct *in_fsp,
32 uint8_t in_file_info_class,
33 uint8_t in_flags,
34 uint32_t in_file_index,
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);
41 static void smbd_smb2_request_find_done(struct tevent_req *subreq);
42 NTSTATUS smbd_smb2_request_process_find(struct smbd_smb2_request *req)
44 NTSTATUS status;
45 const uint8_t *inbody;
46 uint8_t in_file_info_class;
47 uint8_t in_flags;
48 uint32_t in_file_index;
49 uint64_t in_file_id_persistent;
50 uint64_t in_file_id_volatile;
51 struct files_struct *in_fsp;
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;
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 = SMBD_SMB2_IN_BODY_PTR(req);
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) {
77 /* This is ok */
78 } else if (in_file_name_offset !=
79 (SMB2_HDR_BODY + SMBD_SMB2_IN_BODY_LEN(req))) {
80 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
83 if (in_file_name_length > SMBD_SMB2_IN_DYN_LEN(req)) {
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 = SMBD_SMB2_IN_DYN_PTR(req);
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);
106 if (!ok) {
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 in_fsp = file_fsp_smb2(req, in_file_id_persistent, in_file_id_volatile);
119 if (in_fsp == NULL) {
120 return smbd_smb2_request_error(req, NT_STATUS_FILE_CLOSED);
123 subreq = smbd_smb2_find_send(req, req->sconn->ev_ctx,
124 req, in_fsp,
125 in_file_info_class,
126 in_flags,
127 in_file_index,
128 in_output_buffer_length,
129 in_file_name_string);
130 if (subreq == NULL) {
131 return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
133 tevent_req_set_callback(subreq, smbd_smb2_request_find_done, req);
135 return smbd_smb2_request_pending_queue(req, subreq, 500);
138 static void smbd_smb2_request_find_done(struct tevent_req *subreq)
140 struct smbd_smb2_request *req = tevent_req_callback_data(subreq,
141 struct smbd_smb2_request);
142 DATA_BLOB outbody;
143 DATA_BLOB outdyn;
144 uint16_t out_output_buffer_offset;
145 DATA_BLOB out_output_buffer = data_blob_null;
146 NTSTATUS status;
147 NTSTATUS error; /* transport error */
149 status = smbd_smb2_find_recv(subreq,
150 req,
151 &out_output_buffer);
152 TALLOC_FREE(subreq);
153 if (!NT_STATUS_IS_OK(status)) {
154 error = smbd_smb2_request_error(req, status);
155 if (!NT_STATUS_IS_OK(error)) {
156 smbd_server_connection_terminate(req->sconn,
157 nt_errstr(error));
158 return;
160 return;
163 out_output_buffer_offset = SMB2_HDR_BODY + 0x08;
165 outbody = data_blob_talloc(req->out.vector, NULL, 0x08);
166 if (outbody.data == NULL) {
167 error = smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
168 if (!NT_STATUS_IS_OK(error)) {
169 smbd_server_connection_terminate(req->sconn,
170 nt_errstr(error));
171 return;
173 return;
176 SSVAL(outbody.data, 0x00, 0x08 + 1); /* struct size */
177 SSVAL(outbody.data, 0x02,
178 out_output_buffer_offset); /* output buffer offset */
179 SIVAL(outbody.data, 0x04,
180 out_output_buffer.length); /* output buffer length */
182 DEBUG(10,("smbd_smb2_request_find_done: out_output_buffer.length = %u\n",
183 (unsigned int)out_output_buffer.length ));
185 outdyn = out_output_buffer;
187 error = smbd_smb2_request_done(req, outbody, &outdyn);
188 if (!NT_STATUS_IS_OK(error)) {
189 smbd_server_connection_terminate(req->sconn,
190 nt_errstr(error));
191 return;
195 struct smbd_smb2_find_state {
196 struct smbd_smb2_request *smb2req;
197 DATA_BLOB out_output_buffer;
200 static struct tevent_req *smbd_smb2_find_send(TALLOC_CTX *mem_ctx,
201 struct tevent_context *ev,
202 struct smbd_smb2_request *smb2req,
203 struct files_struct *fsp,
204 uint8_t in_file_info_class,
205 uint8_t in_flags,
206 uint32_t in_file_index,
207 uint32_t in_output_buffer_length,
208 const char *in_file_name)
210 struct tevent_req *req;
211 struct smbd_smb2_find_state *state;
212 struct smb_request *smbreq;
213 connection_struct *conn = smb2req->tcon->compat;
214 NTSTATUS status;
215 NTSTATUS empty_status;
216 uint32_t info_level;
217 uint32_t max_count;
218 char *pdata;
219 char *base_data;
220 char *end_data;
221 int last_entry_off = 0;
222 int off = 0;
223 uint32_t num = 0;
224 uint32_t dirtype = FILE_ATTRIBUTE_HIDDEN | FILE_ATTRIBUTE_SYSTEM | FILE_ATTRIBUTE_DIRECTORY;
225 bool dont_descend = false;
226 bool ask_sharemode = true;
228 req = tevent_req_create(mem_ctx, &state,
229 struct smbd_smb2_find_state);
230 if (req == NULL) {
231 return NULL;
233 state->smb2req = smb2req;
234 state->out_output_buffer = data_blob_null;
236 DEBUG(10,("smbd_smb2_find_send: %s - %s\n",
237 fsp_str_dbg(fsp), fsp_fnum_dbg(fsp)));
239 smbreq = smbd_smb2_fake_smb_request(smb2req);
240 if (tevent_req_nomem(smbreq, req)) {
241 return tevent_req_post(req, ev);
244 if (!fsp->is_directory) {
245 tevent_req_nterror(req, NT_STATUS_NOT_SUPPORTED);
246 return tevent_req_post(req, ev);
249 if (strcmp(in_file_name, "") == 0) {
250 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_INVALID);
251 return tevent_req_post(req, ev);
253 if (strcmp(in_file_name, "\\") == 0) {
254 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_INVALID);
255 return tevent_req_post(req, ev);
257 if (strcmp(in_file_name, "/") == 0) {
258 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_INVALID);
259 return tevent_req_post(req, ev);
262 if (in_output_buffer_length > smb2req->sconn->smb2.max_trans) {
263 DEBUG(2,("smbd_smb2_find_send: "
264 "client ignored max trans:%s: 0x%08X: 0x%08X\n",
265 __location__, in_output_buffer_length,
266 smb2req->sconn->smb2.max_trans));
267 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
268 return tevent_req_post(req, ev);
271 status = smbd_smb2_request_verify_creditcharge(smb2req,
272 in_output_buffer_length);
274 if (!NT_STATUS_IS_OK(status)) {
275 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
276 return tevent_req_post(req, ev);
279 switch (in_file_info_class) {
280 case SMB2_FIND_DIRECTORY_INFO:
281 info_level = SMB_FIND_FILE_DIRECTORY_INFO;
282 break;
284 case SMB2_FIND_FULL_DIRECTORY_INFO:
285 info_level = SMB_FIND_FILE_FULL_DIRECTORY_INFO;
286 break;
288 case SMB2_FIND_BOTH_DIRECTORY_INFO:
289 info_level = SMB_FIND_FILE_BOTH_DIRECTORY_INFO;
290 break;
292 case SMB2_FIND_NAME_INFO:
293 info_level = SMB_FIND_FILE_NAMES_INFO;
294 break;
296 case SMB2_FIND_ID_BOTH_DIRECTORY_INFO:
297 info_level = SMB_FIND_ID_BOTH_DIRECTORY_INFO;
298 break;
300 case SMB2_FIND_ID_FULL_DIRECTORY_INFO:
301 info_level = SMB_FIND_ID_FULL_DIRECTORY_INFO;
302 break;
304 default:
305 tevent_req_nterror(req, NT_STATUS_INVALID_INFO_CLASS);
306 return tevent_req_post(req, ev);
309 if (in_flags & SMB2_CONTINUE_FLAG_REOPEN) {
310 dptr_CloseDir(fsp);
313 if (fsp->dptr == NULL) {
314 bool wcard_has_wild;
316 wcard_has_wild = ms_has_wild(in_file_name);
318 status = dptr_create(conn,
319 NULL, /* req */
320 fsp,
321 fsp->fsp_name->base_name,
322 false, /* old_handle */
323 false, /* expect_close */
324 0, /* spid */
325 in_file_name, /* wcard */
326 wcard_has_wild,
327 dirtype,
328 &fsp->dptr);
329 if (!NT_STATUS_IS_OK(status)) {
330 tevent_req_nterror(req, status);
331 return tevent_req_post(req, ev);
334 empty_status = NT_STATUS_NO_SUCH_FILE;
335 } else {
336 empty_status = STATUS_NO_MORE_FILES;
339 if (in_flags & SMB2_CONTINUE_FLAG_RESTART) {
340 dptr_SeekDir(fsp->dptr, 0);
343 if (in_flags & SMB2_CONTINUE_FLAG_SINGLE) {
344 max_count = 1;
345 } else {
346 max_count = UINT16_MAX;
349 #define DIR_ENTRY_SAFETY_MARGIN 4096
351 state->out_output_buffer = data_blob_talloc(state, NULL,
352 in_output_buffer_length + DIR_ENTRY_SAFETY_MARGIN);
353 if (tevent_req_nomem(state->out_output_buffer.data, req)) {
354 return tevent_req_post(req, ev);
357 state->out_output_buffer.length = 0;
358 pdata = (char *)state->out_output_buffer.data;
359 base_data = pdata;
361 * end_data must include the safety margin as it's what is
362 * used to determine if pushed strings have been truncated.
364 end_data = pdata + in_output_buffer_length + DIR_ENTRY_SAFETY_MARGIN - 1;
365 last_entry_off = 0;
366 off = 0;
367 num = 0;
369 DEBUG(8,("smbd_smb2_find_send: dirpath=<%s> dontdescend=<%s>, "
370 "in_output_buffer_length = %u\n",
371 fsp->fsp_name->base_name, lp_dontdescend(talloc_tos(), SNUM(conn)),
372 (unsigned int)in_output_buffer_length ));
373 if (in_list(fsp->fsp_name->base_name,lp_dontdescend(talloc_tos(), SNUM(conn)),
374 conn->case_sensitive)) {
375 dont_descend = true;
378 ask_sharemode = lp_parm_bool(SNUM(conn),
379 "smbd", "search ask sharemode",
380 true);
382 while (true) {
383 bool ok;
384 bool got_exact_match = false;
385 bool out_of_space = false;
386 int space_remaining = in_output_buffer_length - off;
388 SMB_ASSERT(space_remaining >= 0);
390 ok = smbd_dirptr_lanman2_entry(state,
391 conn,
392 fsp->dptr,
393 smbreq->flags2,
394 in_file_name,
395 dirtype,
396 info_level,
397 false, /* requires_resume_key */
398 dont_descend,
399 ask_sharemode,
400 8, /* align to 8 bytes */
401 false, /* no padding */
402 &pdata,
403 base_data,
404 end_data,
405 space_remaining,
406 &out_of_space,
407 &got_exact_match,
408 &last_entry_off,
409 NULL);
411 off = (int)PTR_DIFF(pdata, base_data);
413 if (!ok) {
414 if (num > 0) {
415 SIVAL(state->out_output_buffer.data, last_entry_off, 0);
416 tevent_req_done(req);
417 return tevent_req_post(req, ev);
418 } else if (out_of_space) {
419 tevent_req_nterror(req, NT_STATUS_INFO_LENGTH_MISMATCH);
420 return tevent_req_post(req, ev);
421 } else {
422 tevent_req_nterror(req, empty_status);
423 return tevent_req_post(req, ev);
427 num++;
428 state->out_output_buffer.length = off;
430 if (num < max_count) {
431 continue;
434 SIVAL(state->out_output_buffer.data, last_entry_off, 0);
435 tevent_req_done(req);
436 return tevent_req_post(req, ev);
439 tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
440 return tevent_req_post(req, ev);
443 static NTSTATUS smbd_smb2_find_recv(struct tevent_req *req,
444 TALLOC_CTX *mem_ctx,
445 DATA_BLOB *out_output_buffer)
447 NTSTATUS status;
448 struct smbd_smb2_find_state *state = tevent_req_data(req,
449 struct smbd_smb2_find_state);
451 if (tevent_req_is_nterror(req, &status)) {
452 tevent_req_received(req);
453 return status;
456 *out_output_buffer = state->out_output_buffer;
457 talloc_steal(mem_ctx, out_output_buffer->data);
459 tevent_req_received(req);
460 return NT_STATUS_OK;