s3-smb2_server: fix ioctl InputOffset checking
[amitay/samba.git] / source3 / smbd / smb2_ioctl.c
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 "../lib/util/tevent_ntstatus.h"
26 #include "rpc_server/srv_pipe_hnd.h"
27 #include "include/ntioctl.h"
28
29 static struct tevent_req *smbd_smb2_ioctl_send(TALLOC_CTX *mem_ctx,
30                                                struct tevent_context *ev,
31                                                struct smbd_smb2_request *smb2req,
32                                                uint32_t in_ctl_code,
33                                                uint64_t in_file_id_volatile,
34                                                DATA_BLOB in_input,
35                                                uint32_t in_max_output,
36                                                uint32_t in_flags);
37 static NTSTATUS smbd_smb2_ioctl_recv(struct tevent_req *req,
38                                      TALLOC_CTX *mem_ctx,
39                                      DATA_BLOB *out_output);
40
41 static void smbd_smb2_request_ioctl_done(struct tevent_req *subreq);
42 NTSTATUS smbd_smb2_request_process_ioctl(struct smbd_smb2_request *req)
43 {
44         NTSTATUS status;
45         const uint8_t *inbody;
46         int i = req->current_idx;
47         uint32_t in_ctl_code;
48         uint64_t in_file_id_persistent;
49         uint64_t in_file_id_volatile;
50         uint32_t in_input_offset;
51         uint32_t in_input_length;
52         DATA_BLOB in_input_buffer;
53         uint32_t in_max_output_length;
54         uint32_t in_flags;
55         struct tevent_req *subreq;
56
57         status = smbd_smb2_request_verify_sizes(req, 0x39);
58         if (!NT_STATUS_IS_OK(status)) {
59                 return smbd_smb2_request_error(req, status);
60         }
61         inbody = (const uint8_t *)req->in.vector[i+1].iov_base;
62
63         in_ctl_code             = IVAL(inbody, 0x04);
64         in_file_id_persistent   = BVAL(inbody, 0x08);
65         in_file_id_volatile     = BVAL(inbody, 0x10);
66         in_input_offset         = IVAL(inbody, 0x18);
67         in_input_length         = IVAL(inbody, 0x1C);
68         in_max_output_length    = IVAL(inbody, 0x2C);
69         in_flags                = IVAL(inbody, 0x30);
70
71         /*
72          * InputOffset (4 bytes): The offset, in bytes, from the beginning of
73          * the SMB2 header to the input data buffer. If no input data is
74          * required for the FSCTL/IOCTL command being issued, the client SHOULD
75          * set this value to 0.<49>
76          * <49> If no input data is required for the FSCTL/IOCTL command being
77          * issued, Windows-based clients set this field to any value.
78          */
79         if ((in_input_length > 0)
80          && (in_input_offset != (SMB2_HDR_BODY + req->in.vector[i+1].iov_len))) {
81                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
82         }
83
84         if (in_input_length > req->in.vector[i+2].iov_len) {
85                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
86         }
87
88         in_input_buffer.data = (uint8_t *)req->in.vector[i+2].iov_base;
89         in_input_buffer.length = in_input_length;
90
91         if (req->compat_chain_fsp) {
92                 /* skip check */
93         } else if (in_file_id_persistent == UINT64_MAX &&
94                    in_file_id_volatile == UINT64_MAX) {
95                 /* without a handle */
96         } else if (in_file_id_persistent != in_file_id_volatile) {
97                 return smbd_smb2_request_error(req, NT_STATUS_FILE_CLOSED);
98         }
99
100         subreq = smbd_smb2_ioctl_send(req,
101                                       req->sconn->smb2.event_ctx,
102                                       req,
103                                       in_ctl_code,
104                                       in_file_id_volatile,
105                                       in_input_buffer,
106                                       in_max_output_length,
107                                       in_flags);
108         if (subreq == NULL) {
109                 return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
110         }
111         tevent_req_set_callback(subreq, smbd_smb2_request_ioctl_done, req);
112
113         return smbd_smb2_request_pending_queue(req, subreq);
114 }
115
116 static void smbd_smb2_request_ioctl_done(struct tevent_req *subreq)
117 {
118         struct smbd_smb2_request *req = tevent_req_callback_data(subreq,
119                                         struct smbd_smb2_request);
120         const uint8_t *inbody;
121         int i = req->current_idx;
122         uint8_t *outhdr;
123         DATA_BLOB outbody;
124         DATA_BLOB outdyn;
125         uint32_t in_ctl_code;
126         uint64_t in_file_id_persistent;
127         uint64_t in_file_id_volatile;
128         uint32_t out_input_offset;
129         uint32_t out_output_offset;
130         DATA_BLOB out_output_buffer = data_blob_null;
131         NTSTATUS status;
132         NTSTATUS error; /* transport error */
133
134         status = smbd_smb2_ioctl_recv(subreq, req, &out_output_buffer);
135
136         DEBUG(10,("smbd_smb2_request_ioctl_done: smbd_smb2_ioctl_recv returned "
137                 "%u status %s\n",
138                 (unsigned int)out_output_buffer.length,
139                 nt_errstr(status) ));
140
141         TALLOC_FREE(subreq);
142         if (NT_STATUS_EQUAL(status, STATUS_BUFFER_OVERFLOW)) {
143                 /* also ok */
144         } else if (!NT_STATUS_IS_OK(status)) {
145                 error = smbd_smb2_request_error(req, status);
146                 if (!NT_STATUS_IS_OK(error)) {
147                         smbd_server_connection_terminate(req->sconn,
148                                                          nt_errstr(error));
149                         return;
150                 }
151                 return;
152         }
153
154         out_input_offset = SMB2_HDR_BODY + 0x30;
155         out_output_offset = SMB2_HDR_BODY + 0x30;
156
157         inbody = (const uint8_t *)req->in.vector[i+1].iov_base;
158
159         in_ctl_code             = IVAL(inbody, 0x04);
160         in_file_id_persistent   = BVAL(inbody, 0x08);
161         in_file_id_volatile     = BVAL(inbody, 0x10);
162
163         outhdr = (uint8_t *)req->out.vector[i].iov_base;
164
165         outbody = data_blob_talloc(req->out.vector, NULL, 0x30);
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;
172                 }
173                 return;
174         }
175
176         SSVAL(outbody.data, 0x00, 0x30 + 1);    /* struct size */
177         SSVAL(outbody.data, 0x02, 0);           /* reserved */
178         SIVAL(outbody.data, 0x04,
179               in_ctl_code);                     /* ctl code */
180         SBVAL(outbody.data, 0x08,
181               in_file_id_persistent);           /* file id (persistent) */
182         SBVAL(outbody.data, 0x10,
183               in_file_id_volatile);             /* file id (volatile) */
184         SIVAL(outbody.data, 0x18,
185               out_input_offset);                /* input offset */
186         SIVAL(outbody.data, 0x1C, 0);           /* input count */
187         SIVAL(outbody.data, 0x20,
188               out_output_offset);               /* output offset */
189         SIVAL(outbody.data, 0x24,
190               out_output_buffer.length);        /* output count */
191         SIVAL(outbody.data, 0x28, 0);           /* flags */
192         SIVAL(outbody.data, 0x2C, 0);           /* reserved */
193
194         /*
195          * Note: Windows Vista and 2008 send back also the
196          *       input from the request. But it was fixed in
197          *       Windows 7.
198          */
199         outdyn = out_output_buffer;
200
201         error = smbd_smb2_request_done_ex(req, status, outbody, &outdyn,
202                                           __location__);
203         if (!NT_STATUS_IS_OK(error)) {
204                 smbd_server_connection_terminate(req->sconn,
205                                                  nt_errstr(error));
206                 return;
207         }
208 }
209
210 struct smbd_smb2_ioctl_state {
211         struct smbd_smb2_request *smb2req;
212         struct smb_request *smbreq;
213         files_struct *fsp;
214         DATA_BLOB in_input;
215         uint32_t in_max_output;
216         DATA_BLOB out_output;
217 };
218
219 static void smbd_smb2_ioctl_pipe_write_done(struct tevent_req *subreq);
220 static void smbd_smb2_ioctl_pipe_read_done(struct tevent_req *subreq);
221
222 static struct tevent_req *smbd_smb2_ioctl_send(TALLOC_CTX *mem_ctx,
223                                                struct tevent_context *ev,
224                                                struct smbd_smb2_request *smb2req,
225                                                uint32_t in_ctl_code,
226                                                uint64_t in_file_id_volatile,
227                                                DATA_BLOB in_input,
228                                                uint32_t in_max_output,
229                                                uint32_t in_flags)
230 {
231         struct tevent_req *req;
232         struct smbd_smb2_ioctl_state *state;
233         struct smb_request *smbreq;
234         files_struct *fsp = NULL;
235         struct tevent_req *subreq;
236
237         req = tevent_req_create(mem_ctx, &state,
238                                 struct smbd_smb2_ioctl_state);
239         if (req == NULL) {
240                 return NULL;
241         }
242         state->smb2req = smb2req;
243         state->smbreq = NULL;
244         state->fsp = NULL;
245         state->in_input = in_input;
246         state->in_max_output = in_max_output;
247         state->out_output = data_blob_null;
248
249         DEBUG(10, ("smbd_smb2_ioctl: ctl_code[0x%08x] file_id[0x%016llX]\n",
250                    (unsigned)in_ctl_code,
251                    (unsigned long long)in_file_id_volatile));
252
253         smbreq = smbd_smb2_fake_smb_request(smb2req);
254         if (tevent_req_nomem(smbreq, req)) {
255                 return tevent_req_post(req, ev);
256         }
257         state->smbreq = smbreq;
258
259         if (in_file_id_volatile != UINT64_MAX) {
260                 fsp = file_fsp(smbreq, (uint16_t)in_file_id_volatile);
261                 if (fsp == NULL) {
262                         tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
263                         return tevent_req_post(req, ev);
264                 }
265                 if (smbreq->conn != fsp->conn) {
266                         tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
267                         return tevent_req_post(req, ev);
268                 }
269                 if (smb2req->session->vuid != fsp->vuid) {
270                         tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
271                         return tevent_req_post(req, ev);
272                 }
273                 state->fsp = fsp;
274         }
275
276         switch (in_ctl_code) {
277         case 0x00060194: /* FSCTL_DFS_GET_REFERRALS */
278         {
279                 uint16_t in_max_referral_level;
280                 DATA_BLOB in_file_name_buffer;
281                 char *in_file_name_string;
282                 size_t in_file_name_string_size;
283                 bool ok;
284                 bool overflow = false;
285                 NTSTATUS status;
286                 int dfs_size;
287                 char *dfs_data = NULL;
288
289                 if (!IS_IPC(smbreq->conn)) {
290                         tevent_req_nterror(req, NT_STATUS_INVALID_DEVICE_REQUEST);
291                         return tevent_req_post(req, ev);
292                 }
293
294                 if (!lp_host_msdfs()) {
295                         tevent_req_nterror(req, NT_STATUS_FS_DRIVER_REQUIRED);
296                         return tevent_req_post(req, ev);
297                 }
298
299                 if (in_input.length < (2 + 2)) {
300                         tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
301                         return tevent_req_post(req, ev);
302                 }
303
304                 in_max_referral_level = SVAL(in_input.data, 0);
305                 in_file_name_buffer.data = in_input.data + 2;
306                 in_file_name_buffer.length = in_input.length - 2;
307
308                 ok = convert_string_talloc(state, CH_UTF16, CH_UNIX,
309                                            in_file_name_buffer.data,
310                                            in_file_name_buffer.length,
311                                            &in_file_name_string,
312                                            &in_file_name_string_size);
313                 if (!ok) {
314                         tevent_req_nterror(req, NT_STATUS_ILLEGAL_CHARACTER);
315                         return tevent_req_post(req, ev);
316                 }
317
318                 dfs_size = setup_dfs_referral(smbreq->conn,
319                                               in_file_name_string,
320                                               in_max_referral_level,
321                                               &dfs_data, &status);
322                 if (dfs_size < 0) {
323                         tevent_req_nterror(req, status);
324                         return tevent_req_post(req, ev);
325                 }
326
327                 if (dfs_size > in_max_output) {
328                         /*
329                          * TODO: we need a testsuite for this
330                          */
331                         overflow = true;
332                         dfs_size = in_max_output;
333                 }
334
335                 state->out_output = data_blob_talloc(state,
336                                                      (uint8_t *)dfs_data,
337                                                      dfs_size);
338                 SAFE_FREE(dfs_data);
339                 if (dfs_size > 0 &&
340                     tevent_req_nomem(state->out_output.data, req)) {
341                         return tevent_req_post(req, ev);
342                 }
343
344                 if (overflow) {
345                         tevent_req_nterror(req, STATUS_BUFFER_OVERFLOW);
346                 } else {
347                         tevent_req_done(req);
348                 }
349                 return tevent_req_post(req, ev);
350         }
351         case 0x0011C017: /* FSCTL_PIPE_TRANSCEIVE */
352
353                 if (!IS_IPC(smbreq->conn)) {
354                         tevent_req_nterror(req, NT_STATUS_NOT_SUPPORTED);
355                         return tevent_req_post(req, ev);
356                 }
357
358                 if (fsp == NULL) {
359                         tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
360                         return tevent_req_post(req, ev);
361                 }
362
363                 if (!fsp_is_np(fsp)) {
364                         tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
365                         return tevent_req_post(req, ev);
366                 }
367
368                 DEBUG(10,("smbd_smb2_ioctl_send: np_write_send of size %u\n",
369                         (unsigned int)in_input.length ));
370
371                 subreq = np_write_send(state, ev,
372                                        fsp->fake_file_handle,
373                                        in_input.data,
374                                        in_input.length);
375                 if (tevent_req_nomem(subreq, req)) {
376                         return tevent_req_post(req, ev);
377                 }
378                 tevent_req_set_callback(subreq,
379                                         smbd_smb2_ioctl_pipe_write_done,
380                                         req);
381                 return req;
382
383         case 0x00144064:        /* FSCTL_SRV_ENUMERATE_SNAPSHOTS */
384         {
385                 /*
386                  * This is called to retrieve the number of Shadow Copies (a.k.a. snapshots)
387                  * and return their volume names.  If max_data_count is 16, then it is just
388                  * asking for the number of volumes and length of the combined names.
389                  *
390                  * pdata is the data allocated by our caller, but that uses
391                  * total_data_count (which is 0 in our case) rather than max_data_count.
392                  * Allocate the correct amount and return the pointer to let
393                  * it be deallocated when we return.
394                  */
395                 struct shadow_copy_data *shadow_data = NULL;
396                 bool labels = False;
397                 uint32_t labels_data_count = 0;
398                 uint32_t data_count;
399                 uint32_t i;
400                 char *pdata;
401                 NTSTATUS status;
402
403                 if (fsp == NULL) {
404                         tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
405                         return tevent_req_post(req, ev);
406                 }
407
408                 if (in_max_output < 16) {
409                         DEBUG(0,("FSCTL_GET_SHADOW_COPY_DATA: "
410                                  "in_max_output(%u) < 16 is invalid!\n",
411                                  in_max_output));
412                         tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
413                         return tevent_req_post(req, ev);
414                 }
415
416                 if (in_max_output > 16) {
417                         labels = True;
418                 }
419
420                 shadow_data = talloc_zero(talloc_tos(),
421                                             struct shadow_copy_data);
422                 if (tevent_req_nomem(shadow_data, req)) {
423                         DEBUG(0,("TALLOC_ZERO() failed!\n"));
424                         return tevent_req_post(req, ev);
425                 }
426
427                 /*
428                  * Call the VFS routine to actually do the work.
429                  */
430                 if (SMB_VFS_GET_SHADOW_COPY_DATA(fsp, shadow_data, labels)
431                     != 0) {
432                         if (errno == ENOSYS) {
433                                 DEBUG(5, ("FSCTL_GET_SHADOW_COPY_DATA: "
434                                           "connectpath %s, not supported.\n",
435                                           smbreq->conn->connectpath));
436                                 status = NT_STATUS_NOT_SUPPORTED;
437                         } else {
438                                 DEBUG(0,("FSCTL_GET_SHADOW_COPY_DATA: "
439                                          "connectpath %s, failed.\n",
440                                          smbreq->conn->connectpath));
441                                 status = map_nt_error_from_unix(errno);
442                         }
443                         TALLOC_FREE(shadow_data);
444                         tevent_req_nterror(req, status);
445                         return tevent_req_post(req, ev);
446                 }
447
448                 labels_data_count =
449                         (shadow_data->num_volumes*2*sizeof(SHADOW_COPY_LABEL))
450                         + 2;
451
452                 if (labels) {
453                         data_count = 12+labels_data_count+4;
454                 } else {
455                         data_count = 16;
456                 }
457
458                 if (labels && (in_max_output < data_count)) {
459                         DEBUG(0, ("FSCTL_GET_SHADOW_COPY_DATA: "
460                                   "in_max_output(%u) too small (%u) bytes "
461                                   "needed!\n", in_max_output, data_count));
462                         TALLOC_FREE(shadow_data);
463                         tevent_req_nterror(req, NT_STATUS_BUFFER_TOO_SMALL);
464                         return tevent_req_post(req, ev);
465                 }
466
467                 state->out_output = data_blob_talloc(state, NULL, data_count);
468                 if (tevent_req_nomem(state->out_output.data, req)) {
469                         return tevent_req_post(req, ev);
470                 }
471
472                 pdata = (char *)state->out_output.data;
473
474                 /* num_volumes 4 bytes */
475                 SIVAL(pdata, 0, shadow_data->num_volumes);
476
477                 if (labels) {
478                         /* num_labels 4 bytes */
479                         SIVAL(pdata, 4, shadow_data->num_volumes);
480                 }
481
482                 /* needed_data_count 4 bytes */
483                 SIVAL(pdata, 8, labels_data_count+4);
484
485                 pdata += 12;
486
487                 DEBUG(10,("FSCTL_GET_SHADOW_COPY_DATA: %u volumes for "
488                           "path[%s].\n",
489                           shadow_data->num_volumes, fsp_str_dbg(fsp)));
490                 if (labels && shadow_data->labels) {
491                         for (i=0; i<shadow_data->num_volumes; i++) {
492                                 srvstr_push(pdata, smbreq->flags2,
493                                             pdata, shadow_data->labels[i],
494                                             2*sizeof(SHADOW_COPY_LABEL),
495                                             STR_UNICODE|STR_TERMINATE);
496                                 pdata += 2*sizeof(SHADOW_COPY_LABEL);
497                                 DEBUGADD(10, ("Label[%u]: '%s'\n", i,
498                                               shadow_data->labels[i]));
499                         }
500                 }
501
502                 TALLOC_FREE(shadow_data);
503
504                 tevent_req_done(req);
505                 return tevent_req_post(req, ev);
506         }
507
508         default:
509                 if (IS_IPC(smbreq->conn)) {
510                         tevent_req_nterror(req, NT_STATUS_FS_DRIVER_REQUIRED);
511                         return tevent_req_post(req, ev);
512                 }
513                 tevent_req_nterror(req, NT_STATUS_INVALID_DEVICE_REQUEST);
514                 return tevent_req_post(req, ev);
515         }
516
517         tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
518         return tevent_req_post(req, ev);
519 }
520
521 static void smbd_smb2_ioctl_pipe_write_done(struct tevent_req *subreq)
522 {
523         struct tevent_req *req = tevent_req_callback_data(subreq,
524                                  struct tevent_req);
525         struct smbd_smb2_ioctl_state *state = tevent_req_data(req,
526                                               struct smbd_smb2_ioctl_state);
527         NTSTATUS status;
528         ssize_t nwritten = -1;
529
530         status = np_write_recv(subreq, &nwritten);
531
532         DEBUG(10,("smbd_smb2_ioctl_pipe_write_done: received %ld\n",
533                 (long int)nwritten ));
534
535         TALLOC_FREE(subreq);
536         if (!NT_STATUS_IS_OK(status)) {
537                 tevent_req_nterror(req, status);
538                 return;
539         }
540
541         if (nwritten != state->in_input.length) {
542                 tevent_req_nterror(req, NT_STATUS_PIPE_NOT_AVAILABLE);
543                 return;
544         }
545
546         state->out_output = data_blob_talloc(state, NULL, state->in_max_output);
547         if (state->in_max_output > 0 &&
548             tevent_req_nomem(state->out_output.data, req)) {
549                 return;
550         }
551
552         DEBUG(10,("smbd_smb2_ioctl_pipe_write_done: issuing np_read_send "
553                 "of size %u\n",
554                 (unsigned int)state->out_output.length ));
555
556         TALLOC_FREE(subreq);
557         subreq = np_read_send(state->smbreq->conn,
558                               state->smb2req->sconn->smb2.event_ctx,
559                               state->fsp->fake_file_handle,
560                               state->out_output.data,
561                               state->out_output.length);
562         if (tevent_req_nomem(subreq, req)) {
563                 return;
564         }
565         tevent_req_set_callback(subreq, smbd_smb2_ioctl_pipe_read_done, req);
566 }
567
568 static void smbd_smb2_ioctl_pipe_read_done(struct tevent_req *subreq)
569 {
570         struct tevent_req *req = tevent_req_callback_data(subreq,
571                                  struct tevent_req);
572         struct smbd_smb2_ioctl_state *state = tevent_req_data(req,
573                                               struct smbd_smb2_ioctl_state);
574         NTSTATUS status;
575         ssize_t nread = -1;
576         bool is_data_outstanding = false;
577
578         status = np_read_recv(subreq, &nread, &is_data_outstanding);
579
580         DEBUG(10,("smbd_smb2_ioctl_pipe_read_done: np_read_recv nread = %d "
581                  "is_data_outstanding = %d, status = %s\n",
582                 (int)nread,
583                 (int)is_data_outstanding,
584                 nt_errstr(status) ));
585
586         TALLOC_FREE(subreq);
587         if (!NT_STATUS_IS_OK(status)) {
588                 tevent_req_nterror(req, status);
589                 return;
590         }
591
592         state->out_output.length = nread;
593
594         if (is_data_outstanding) {
595                 tevent_req_nterror(req, STATUS_BUFFER_OVERFLOW);
596                 return;
597         }
598
599         tevent_req_done(req);
600 }
601
602 static NTSTATUS smbd_smb2_ioctl_recv(struct tevent_req *req,
603                                      TALLOC_CTX *mem_ctx,
604                                      DATA_BLOB *out_output)
605 {
606         NTSTATUS status = NT_STATUS_OK;
607         struct smbd_smb2_ioctl_state *state = tevent_req_data(req,
608                                               struct smbd_smb2_ioctl_state);
609
610         if (tevent_req_is_nterror(req, &status)) {
611                 if (!NT_STATUS_EQUAL(status, STATUS_BUFFER_OVERFLOW)) {
612                         tevent_req_received(req);
613                         return status;
614                 }
615         }
616
617         *out_output = state->out_output;
618         talloc_steal(mem_ctx, out_output->data);
619
620         tevent_req_received(req);
621         return status;
622 }