source: branches/samba-3.5.x/source4/ntvfs/ipc/vfs_ipc.c

Last change on this file was 414, checked in by Herwig Bauernfeind, 15 years ago

Samba 3.5.0: Initial import
File size: 33.6 KB
Line 
1/*
2 Unix SMB/CIFS implementation.
3 default IPC$ NTVFS backend
4
5 Copyright (C) Andrew Tridgell 2003
6 Copyright (C) Stefan (metze) Metzmacher 2004-2005
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>.
20*/
21/*
22 this implements the IPC$ backend, called by the NTVFS subsystem to
23 handle requests on IPC$ shares
24*/
25
26
27#include "includes.h"
28#include "../lib/util/dlinklist.h"
29#include "ntvfs/ntvfs.h"
30#include "libcli/rap/rap.h"
31#include "ntvfs/ipc/proto.h"
32#include "libcli/raw/ioctl.h"
33#include "param/param.h"
34#include "../lib/tsocket/tsocket.h"
35#include "../libcli/named_pipe_auth/npa_tstream.h"
36#include "auth/auth.h"
37#include "auth/auth_sam_reply.h"
38#include "lib/socket/socket.h"
39#include "auth/credentials/credentials.h"
40#include "auth/credentials/credentials_krb5.h"
41#include <gssapi/gssapi.h>
42#include "system/locale.h"
43
44/* this is the private structure used to keep the state of an open
45 ipc$ connection. It needs to keep information about all open
46 pipes */
47struct ipc_private {
48 struct ntvfs_module_context *ntvfs;
49
50 /* a list of open pipes */
51 struct pipe_state {
52 struct pipe_state *next, *prev;
53 struct ipc_private *ipriv;
54 const char *pipe_name;
55 struct ntvfs_handle *handle;
56 struct tstream_context *npipe;
57 uint16_t file_type;
58 uint16_t device_state;
59 uint64_t allocation_size;
60 struct tevent_queue *write_queue;
61 struct tevent_queue *read_queue;
62 } *pipe_list;
63};
64
65
66/*
67 find a open pipe give a file handle
68*/
69static struct pipe_state *pipe_state_find(struct ipc_private *ipriv, struct ntvfs_handle *handle)
70{
71 struct pipe_state *s;
72 void *p;
73
74 p = ntvfs_handle_get_backend_data(handle, ipriv->ntvfs);
75 if (!p) return NULL;
76
77 s = talloc_get_type(p, struct pipe_state);
78 if (!s) return NULL;
79
80 return s;
81}
82
83/*
84 find a open pipe give a wire fnum
85*/
86static struct pipe_state *pipe_state_find_key(struct ipc_private *ipriv, struct ntvfs_request *req, const DATA_BLOB *key)
87{
88 struct ntvfs_handle *h;
89
90 h = ntvfs_handle_search_by_wire_key(ipriv->ntvfs, req, key);
91 if (!h) return NULL;
92
93 return pipe_state_find(ipriv, h);
94}
95
96
97/*
98 connect to a share - always works
99*/
100static NTSTATUS ipc_connect(struct ntvfs_module_context *ntvfs,
101 struct ntvfs_request *req,
102 union smb_tcon* tcon)
103{
104 struct ipc_private *ipriv;
105 const char *sharename;
106
107 switch (tcon->generic.level) {
108 case RAW_TCON_TCON:
109 sharename = tcon->tcon.in.service;
110 break;
111 case RAW_TCON_TCONX:
112 sharename = tcon->tconx.in.path;
113 break;
114 case RAW_TCON_SMB2:
115 sharename = tcon->smb2.in.path;
116 break;
117 default:
118 return NT_STATUS_INVALID_LEVEL;
119 }
120
121 if (strncmp(sharename, "\\\\", 2) == 0) {
122 char *p = strchr(sharename+2, '\\');
123 if (p) {
124 sharename = p + 1;
125 }
126 }
127
128 ntvfs->ctx->fs_type = talloc_strdup(ntvfs->ctx, "IPC");
129 NT_STATUS_HAVE_NO_MEMORY(ntvfs->ctx->fs_type);
130
131 ntvfs->ctx->dev_type = talloc_strdup(ntvfs->ctx, "IPC");
132 NT_STATUS_HAVE_NO_MEMORY(ntvfs->ctx->dev_type);
133
134 if (tcon->generic.level == RAW_TCON_TCONX) {
135 tcon->tconx.out.fs_type = ntvfs->ctx->fs_type;
136 tcon->tconx.out.dev_type = ntvfs->ctx->dev_type;
137 }
138
139 /* prepare the private state for this connection */
140 ipriv = talloc(ntvfs, struct ipc_private);
141 NT_STATUS_HAVE_NO_MEMORY(ipriv);
142
143 ntvfs->private_data = ipriv;
144
145 ipriv->ntvfs = ntvfs;
146 ipriv->pipe_list = NULL;
147
148 return NT_STATUS_OK;
149}
150
151/*
152 disconnect from a share
153*/
154static NTSTATUS ipc_disconnect(struct ntvfs_module_context *ntvfs)
155{
156 return NT_STATUS_OK;
157}
158
159/*
160 delete a file
161*/
162static NTSTATUS ipc_unlink(struct ntvfs_module_context *ntvfs,
163 struct ntvfs_request *req,
164 union smb_unlink *unl)
165{
166 return NT_STATUS_ACCESS_DENIED;
167}
168
169/*
170 check if a directory exists
171*/
172static NTSTATUS ipc_chkpath(struct ntvfs_module_context *ntvfs,
173 struct ntvfs_request *req,
174 union smb_chkpath *cp)
175{
176 return NT_STATUS_ACCESS_DENIED;
177}
178
179/*
180 return info on a pathname
181*/
182static NTSTATUS ipc_qpathinfo(struct ntvfs_module_context *ntvfs,
183 struct ntvfs_request *req, union smb_fileinfo *info)
184{
185 switch (info->generic.level) {
186 case RAW_FILEINFO_GENERIC:
187 return NT_STATUS_INVALID_DEVICE_REQUEST;
188 case RAW_FILEINFO_GETATTR:
189 return NT_STATUS_ACCESS_DENIED;
190 default:
191 return ntvfs_map_qpathinfo(ntvfs, req, info);
192 }
193}
194
195/*
196 set info on a pathname
197*/
198static NTSTATUS ipc_setpathinfo(struct ntvfs_module_context *ntvfs,
199 struct ntvfs_request *req, union smb_setfileinfo *st)
200{
201 return NT_STATUS_ACCESS_DENIED;
202}
203
204
205/*
206 destroy a open pipe structure
207*/
208static int ipc_fd_destructor(struct pipe_state *p)
209{
210 DLIST_REMOVE(p->ipriv->pipe_list, p);
211 ntvfs_handle_remove_backend_data(p->handle, p->ipriv->ntvfs);
212 return 0;
213}
214
215struct ipc_open_state {
216 struct ipc_private *ipriv;
217 struct pipe_state *p;
218 struct ntvfs_request *req;
219 union smb_open *oi;
220 struct netr_SamInfo3 *info3;
221};
222
223static void ipc_open_done(struct tevent_req *subreq);
224
225/*
226 check the pipename is valid
227 */
228static NTSTATUS validate_pipename(const char *name)
229{
230 while (*name) {
231 if (!isalnum(*name)) return NT_STATUS_INVALID_PARAMETER;
232 name++;
233 }
234 return NT_STATUS_OK;
235}
236
237/*
238 open a file - used for MSRPC pipes
239*/
240static NTSTATUS ipc_open(struct ntvfs_module_context *ntvfs,
241 struct ntvfs_request *req, union smb_open *oi)
242{
243 NTSTATUS status;
244 struct pipe_state *p;
245 struct ipc_private *ipriv = talloc_get_type_abort(ntvfs->private_data,
246 struct ipc_private);
247 struct smb_iconv_convenience *smb_ic
248 = lp_iconv_convenience(ipriv->ntvfs->ctx->lp_ctx);
249 struct ntvfs_handle *h;
250 struct ipc_open_state *state;
251 struct tevent_req *subreq;
252 const char *fname;
253 const char *directory;
254 struct socket_address *client_sa;
255 struct tsocket_address *client_addr;
256 struct socket_address *server_sa;
257 struct tsocket_address *server_addr;
258 int ret;
259 DATA_BLOB delegated_creds = data_blob_null;
260
261 switch (oi->generic.level) {
262 case RAW_OPEN_NTCREATEX:
263 fname = oi->ntcreatex.in.fname;
264 break;
265 case RAW_OPEN_OPENX:
266 fname = oi->openx.in.fname;
267 break;
268 case RAW_OPEN_SMB2:
269 fname = oi->smb2.in.fname;
270 break;
271 default:
272 status = NT_STATUS_NOT_SUPPORTED;
273 break;
274 }
275
276 directory = talloc_asprintf(req, "%s/np",
277 lp_ncalrpc_dir(ipriv->ntvfs->ctx->lp_ctx));
278 NT_STATUS_HAVE_NO_MEMORY(directory);
279
280 state = talloc(req, struct ipc_open_state);
281 NT_STATUS_HAVE_NO_MEMORY(state);
282
283 status = ntvfs_handle_new(ntvfs, req, &h);
284 NT_STATUS_NOT_OK_RETURN(status);
285
286 p = talloc(h, struct pipe_state);
287 NT_STATUS_HAVE_NO_MEMORY(p);
288
289 while (fname[0] == '\\') fname++;
290
291 /* check for valid characters in name */
292 fname = strlower_talloc(p, fname);
293
294 status = validate_pipename(fname);
295 NT_STATUS_NOT_OK_RETURN(status);
296
297 p->pipe_name = talloc_asprintf(p, "\\pipe\\%s", fname);
298 NT_STATUS_HAVE_NO_MEMORY(p->pipe_name);
299
300 p->handle = h;
301 p->ipriv = ipriv;
302
303 p->write_queue = tevent_queue_create(p, "ipc_write_queue");
304 NT_STATUS_HAVE_NO_MEMORY(p->write_queue);
305
306 p->read_queue = tevent_queue_create(p, "ipc_read_queue");
307 NT_STATUS_HAVE_NO_MEMORY(p->read_queue);
308
309 state->ipriv = ipriv;
310 state->p = p;
311 state->req = req;
312 state->oi = oi;
313
314 status = auth_convert_server_info_saminfo3(state,
315 req->session_info->server_info,
316 &state->info3);
317 NT_STATUS_NOT_OK_RETURN(status);
318
319 client_sa = ntvfs_get_peer_addr(ntvfs, state);
320 if (!client_sa) {
321 return NT_STATUS_INTERNAL_ERROR;
322 }
323
324 server_sa = ntvfs_get_my_addr(ntvfs, state);
325 if (!server_sa) {
326 return NT_STATUS_INTERNAL_ERROR;
327 }
328
329 ret = tsocket_address_inet_from_strings(state, "ip",
330 client_sa->addr,
331 client_sa->port,
332 &client_addr);
333 if (ret == -1) {
334 status = map_nt_error_from_unix(errno);
335 return status;
336 }
337
338 ret = tsocket_address_inet_from_strings(state, "ip",
339 server_sa->addr,
340 server_sa->port,
341 &server_addr);
342 if (ret == -1) {
343 status = map_nt_error_from_unix(errno);
344 return status;
345 }
346
347 if (req->session_info->credentials) {
348 struct gssapi_creds_container *gcc;
349 OM_uint32 gret;
350 OM_uint32 minor_status;
351 gss_buffer_desc cred_token;
352
353 ret = cli_credentials_get_client_gss_creds(req->session_info->credentials,
354 ipriv->ntvfs->ctx->event_ctx,
355 ipriv->ntvfs->ctx->lp_ctx,
356 &gcc);
357 if (ret) {
358 goto skip;
359 }
360
361 gret = gss_export_cred(&minor_status,
362 gcc->creds,
363 &cred_token);
364 if (gret != GSS_S_COMPLETE) {
365 return NT_STATUS_INTERNAL_ERROR;
366 }
367
368 if (cred_token.length) {
369 delegated_creds = data_blob_talloc(req,
370 cred_token.value,
371 cred_token.length);
372 gss_release_buffer(&minor_status, &cred_token);
373 NT_STATUS_HAVE_NO_MEMORY(delegated_creds.data);
374 }
375 }
376
377skip:
378
379 subreq = tstream_npa_connect_send(p,
380 ipriv->ntvfs->ctx->event_ctx,
381 smb_ic,
382 directory,
383 fname,
384 client_addr,
385 NULL,
386 server_addr,
387 NULL,
388 state->info3,
389 req->session_info->session_key,
390 delegated_creds);
391 NT_STATUS_HAVE_NO_MEMORY(subreq);
392 tevent_req_set_callback(subreq, ipc_open_done, state);
393
394 req->async_states->state |= NTVFS_ASYNC_STATE_ASYNC;
395 return NT_STATUS_OK;
396}
397
398static void ipc_open_done(struct tevent_req *subreq)
399{
400 struct ipc_open_state *state = tevent_req_callback_data(subreq,
401 struct ipc_open_state);
402 struct ipc_private *ipriv = state->ipriv;
403 struct pipe_state *p = state->p;
404 struct ntvfs_request *req = state->req;
405 union smb_open *oi = state->oi;
406 int ret;
407 int sys_errno;
408 NTSTATUS status;
409
410 ret = tstream_npa_connect_recv(subreq, &sys_errno,
411 p, &p->npipe,
412 &p->file_type,
413 &p->device_state,
414 &p->allocation_size);
415 TALLOC_FREE(subreq);
416 if (ret == -1) {
417 status = map_nt_error_from_unix(sys_errno);
418 goto reply;
419 }
420
421 DLIST_ADD(ipriv->pipe_list, p);
422 talloc_set_destructor(p, ipc_fd_destructor);
423
424 status = ntvfs_handle_set_backend_data(p->handle, ipriv->ntvfs, p);
425 if (!NT_STATUS_IS_OK(status)) {
426 goto reply;
427 }
428
429 switch (oi->generic.level) {
430 case RAW_OPEN_NTCREATEX:
431 ZERO_STRUCT(oi->ntcreatex.out);
432 oi->ntcreatex.out.file.ntvfs = p->handle;
433 oi->ntcreatex.out.oplock_level = 0;
434 oi->ntcreatex.out.create_action = NTCREATEX_ACTION_EXISTED;
435 oi->ntcreatex.out.create_time = 0;
436 oi->ntcreatex.out.access_time = 0;
437 oi->ntcreatex.out.write_time = 0;
438 oi->ntcreatex.out.change_time = 0;
439 oi->ntcreatex.out.attrib = FILE_ATTRIBUTE_NORMAL;
440 oi->ntcreatex.out.alloc_size = p->allocation_size;
441 oi->ntcreatex.out.size = 0;
442 oi->ntcreatex.out.file_type = p->file_type;
443 oi->ntcreatex.out.ipc_state = p->device_state;
444 oi->ntcreatex.out.is_directory = 0;
445 break;
446 case RAW_OPEN_OPENX:
447 ZERO_STRUCT(oi->openx.out);
448 oi->openx.out.file.ntvfs = p->handle;
449 oi->openx.out.attrib = FILE_ATTRIBUTE_NORMAL;
450 oi->openx.out.write_time = 0;
451 oi->openx.out.size = 0;
452 oi->openx.out.access = 0;
453 oi->openx.out.ftype = p->file_type;
454 oi->openx.out.devstate = p->device_state;
455 oi->openx.out.action = 0;
456 oi->openx.out.unique_fid = 0;
457 oi->openx.out.access_mask = 0;
458 oi->openx.out.unknown = 0;
459 break;
460 case RAW_OPEN_SMB2:
461 ZERO_STRUCT(oi->smb2.out);
462 oi->smb2.out.file.ntvfs = p->handle;
463 oi->smb2.out.oplock_level = oi->smb2.in.oplock_level;
464 oi->smb2.out.create_action = NTCREATEX_ACTION_EXISTED;
465 oi->smb2.out.create_time = 0;
466 oi->smb2.out.access_time = 0;
467 oi->smb2.out.write_time = 0;
468 oi->smb2.out.change_time = 0;
469 oi->smb2.out.alloc_size = p->allocation_size;
470 oi->smb2.out.size = 0;
471 oi->smb2.out.file_attr = FILE_ATTRIBUTE_NORMAL;
472 oi->smb2.out.reserved2 = 0;
473 break;
474 default:
475 break;
476 }
477
478reply:
479 req->async_states->status = status;
480 req->async_states->send_fn(req);
481}
482
483/*
484 create a directory
485*/
486static NTSTATUS ipc_mkdir(struct ntvfs_module_context *ntvfs,
487 struct ntvfs_request *req, union smb_mkdir *md)
488{
489 return NT_STATUS_ACCESS_DENIED;
490}
491
492/*
493 remove a directory
494*/
495static NTSTATUS ipc_rmdir(struct ntvfs_module_context *ntvfs,
496 struct ntvfs_request *req, struct smb_rmdir *rd)
497{
498 return NT_STATUS_ACCESS_DENIED;
499}
500
501/*
502 rename a set of files
503*/
504static NTSTATUS ipc_rename(struct ntvfs_module_context *ntvfs,
505 struct ntvfs_request *req, union smb_rename *ren)
506{
507 return NT_STATUS_ACCESS_DENIED;
508}
509
510/*
511 copy a set of files
512*/
513static NTSTATUS ipc_copy(struct ntvfs_module_context *ntvfs,
514 struct ntvfs_request *req, struct smb_copy *cp)
515{
516 return NT_STATUS_ACCESS_DENIED;
517}
518
519struct ipc_readv_next_vector_state {
520 uint8_t *buf;
521 size_t len;
522 off_t ofs;
523 size_t remaining;
524};
525
526static void ipc_readv_next_vector_init(struct ipc_readv_next_vector_state *s,
527 uint8_t *buf, size_t len)
528{
529 ZERO_STRUCTP(s);
530
531 s->buf = buf;
532 s->len = MIN(len, UINT16_MAX);
533 //DEBUG(0,("readv_next_vector_init[%u 0x%04X]\n", s->len, s->len));
534}
535
536static int ipc_readv_next_vector(struct tstream_context *stream,
537 void *private_data,
538 TALLOC_CTX *mem_ctx,
539 struct iovec **_vector,
540 size_t *count)
541{
542 struct ipc_readv_next_vector_state *state =
543 (struct ipc_readv_next_vector_state *)private_data;
544 struct iovec *vector;
545 ssize_t pending;
546 size_t wanted;
547
548 if (state->ofs == state->len) {
549 *_vector = NULL;
550 *count = 0;
551// DEBUG(0,("readv_next_vector done ofs[%u 0x%04X]\n",
552// state->ofs, state->ofs));
553 return 0;
554 }
555
556 pending = tstream_pending_bytes(stream);
557 if (pending == -1) {
558 return -1;
559 }
560
561 if (pending == 0 && state->ofs != 0) {
562 /* return a short read */
563 *_vector = NULL;
564 *count = 0;
565// DEBUG(0,("readv_next_vector short read ofs[%u 0x%04X]\n",
566// state->ofs, state->ofs));
567 return 0;
568 }
569
570 if (pending == 0) {
571 /* we want at least one byte and recheck again */
572 wanted = 1;
573 } else {
574 size_t missing = state->len - state->ofs;
575 if (pending > missing) {
576 /* there's more available */
577 state->remaining = pending - missing;
578 wanted = missing;
579 } else {
580 /* read what we can get and recheck in the next cycle */
581 wanted = pending;
582 }
583 }
584
585 vector = talloc_array(mem_ctx, struct iovec, 1);
586 if (!vector) {
587 return -1;
588 }
589
590 vector[0].iov_base = state->buf + state->ofs;
591 vector[0].iov_len = wanted;
592
593 state->ofs += wanted;
594
595 *_vector = vector;
596 *count = 1;
597 return 0;
598}
599
600struct ipc_read_state {
601 struct ipc_private *ipriv;
602 struct pipe_state *p;
603 struct ntvfs_request *req;
604 union smb_read *rd;
605 struct ipc_readv_next_vector_state next_vector;
606};
607
608static void ipc_read_done(struct tevent_req *subreq);
609
610/*
611 read from a file
612*/
613static NTSTATUS ipc_read(struct ntvfs_module_context *ntvfs,
614 struct ntvfs_request *req, union smb_read *rd)
615{
616 struct ipc_private *ipriv = talloc_get_type_abort(ntvfs->private_data,
617 struct ipc_private);
618 struct pipe_state *p;
619 struct ipc_read_state *state;
620 struct tevent_req *subreq;
621
622 if (rd->generic.level != RAW_READ_GENERIC) {
623 return ntvfs_map_read(ntvfs, req, rd);
624 }
625
626 p = pipe_state_find(ipriv, rd->readx.in.file.ntvfs);
627 if (!p) {
628 return NT_STATUS_INVALID_HANDLE;
629 }
630
631 state = talloc(req, struct ipc_read_state);
632 NT_STATUS_HAVE_NO_MEMORY(state);
633
634 state->ipriv = ipriv;
635 state->p = p;
636 state->req = req;
637 state->rd = rd;
638
639 /* rd->readx.out.data is already allocated */
640 ipc_readv_next_vector_init(&state->next_vector,
641 rd->readx.out.data,
642 rd->readx.in.maxcnt);
643
644 subreq = tstream_readv_pdu_queue_send(req,
645 ipriv->ntvfs->ctx->event_ctx,
646 p->npipe,
647 p->read_queue,
648 ipc_readv_next_vector,
649 &state->next_vector);
650 NT_STATUS_HAVE_NO_MEMORY(subreq);
651 tevent_req_set_callback(subreq, ipc_read_done, state);
652
653 req->async_states->state |= NTVFS_ASYNC_STATE_ASYNC;
654 return NT_STATUS_OK;
655}
656
657static void ipc_read_done(struct tevent_req *subreq)
658{
659 struct ipc_read_state *state =
660 tevent_req_callback_data(subreq,
661 struct ipc_read_state);
662 struct ntvfs_request *req = state->req;
663 union smb_read *rd = state->rd;
664 int ret;
665 int sys_errno;
666 NTSTATUS status;
667
668 ret = tstream_readv_pdu_queue_recv(subreq, &sys_errno);
669 TALLOC_FREE(subreq);
670 if (ret == -1) {
671 status = map_nt_error_from_unix(sys_errno);
672 goto reply;
673 }
674
675 status = NT_STATUS_OK;
676 if (state->next_vector.remaining > 0) {
677 status = STATUS_BUFFER_OVERFLOW;
678 }
679
680 rd->readx.out.remaining = state->next_vector.remaining;
681 rd->readx.out.compaction_mode = 0;
682 rd->readx.out.nread = ret;
683
684reply:
685 req->async_states->status = status;
686 req->async_states->send_fn(req);
687}
688
689struct ipc_write_state {
690 struct ipc_private *ipriv;
691 struct pipe_state *p;
692 struct ntvfs_request *req;
693 union smb_write *wr;
694 struct iovec iov;
695};
696
697static void ipc_write_done(struct tevent_req *subreq);
698
699/*
700 write to a file
701*/
702static NTSTATUS ipc_write(struct ntvfs_module_context *ntvfs,
703 struct ntvfs_request *req, union smb_write *wr)
704{
705 struct ipc_private *ipriv = talloc_get_type_abort(ntvfs->private_data,
706 struct ipc_private);
707 struct pipe_state *p;
708 struct tevent_req *subreq;
709 struct ipc_write_state *state;
710
711 if (wr->generic.level != RAW_WRITE_GENERIC) {
712 return ntvfs_map_write(ntvfs, req, wr);
713 }
714
715 p = pipe_state_find(ipriv, wr->writex.in.file.ntvfs);
716 if (!p) {
717 return NT_STATUS_INVALID_HANDLE;
718 }
719
720 state = talloc(req, struct ipc_write_state);
721 NT_STATUS_HAVE_NO_MEMORY(state);
722
723 state->ipriv = ipriv;
724 state->p = p;
725 state->req = req;
726 state->wr = wr;
727 state->iov.iov_base = discard_const_p(void, wr->writex.in.data);
728 state->iov.iov_len = wr->writex.in.count;
729
730 subreq = tstream_writev_queue_send(state,
731 ipriv->ntvfs->ctx->event_ctx,
732 p->npipe,
733 p->write_queue,
734 &state->iov, 1);
735 NT_STATUS_HAVE_NO_MEMORY(subreq);
736 tevent_req_set_callback(subreq, ipc_write_done, state);
737
738 req->async_states->state |= NTVFS_ASYNC_STATE_ASYNC;
739 return NT_STATUS_OK;
740}
741
742static void ipc_write_done(struct tevent_req *subreq)
743{
744 struct ipc_write_state *state =
745 tevent_req_callback_data(subreq,
746 struct ipc_write_state);
747 struct ntvfs_request *req = state->req;
748 union smb_write *wr = state->wr;
749 int ret;
750 int sys_errno;
751 NTSTATUS status;
752
753 ret = tstream_writev_queue_recv(subreq, &sys_errno);
754 TALLOC_FREE(subreq);
755 if (ret == -1) {
756 status = map_nt_error_from_unix(sys_errno);
757 goto reply;
758 }
759
760 status = NT_STATUS_OK;
761
762 wr->writex.out.nwritten = ret;
763 wr->writex.out.remaining = 0;
764
765reply:
766 req->async_states->status = status;
767 req->async_states->send_fn(req);
768}
769
770/*
771 seek in a file
772*/
773static NTSTATUS ipc_seek(struct ntvfs_module_context *ntvfs,
774 struct ntvfs_request *req,
775 union smb_seek *io)
776{
777 return NT_STATUS_ACCESS_DENIED;
778}
779
780/*
781 flush a file
782*/
783static NTSTATUS ipc_flush(struct ntvfs_module_context *ntvfs,
784 struct ntvfs_request *req,
785 union smb_flush *io)
786{
787 return NT_STATUS_ACCESS_DENIED;
788}
789
790/*
791 close a file
792*/
793static NTSTATUS ipc_close(struct ntvfs_module_context *ntvfs,
794 struct ntvfs_request *req, union smb_close *io)
795{
796 struct ipc_private *ipriv = talloc_get_type_abort(ntvfs->private_data,
797 struct ipc_private);
798 struct pipe_state *p;
799
800 if (io->generic.level != RAW_CLOSE_CLOSE) {
801 return ntvfs_map_close(ntvfs, req, io);
802 }
803
804 p = pipe_state_find(ipriv, io->close.in.file.ntvfs);
805 if (!p) {
806 return NT_STATUS_INVALID_HANDLE;
807 }
808
809 talloc_free(p);
810
811 return NT_STATUS_OK;
812}
813
814/*
815 exit - closing files
816*/
817static NTSTATUS ipc_exit(struct ntvfs_module_context *ntvfs,
818 struct ntvfs_request *req)
819{
820 struct ipc_private *ipriv = talloc_get_type_abort(ntvfs->private_data,
821 struct ipc_private);
822 struct pipe_state *p, *next;
823
824 for (p=ipriv->pipe_list; p; p=next) {
825 next = p->next;
826 if (p->handle->session_info == req->session_info &&
827 p->handle->smbpid == req->smbpid) {
828 talloc_free(p);
829 }
830 }
831
832 return NT_STATUS_OK;
833}
834
835/*
836 logoff - closing files open by the user
837*/
838static NTSTATUS ipc_logoff(struct ntvfs_module_context *ntvfs,
839 struct ntvfs_request *req)
840{
841 struct ipc_private *ipriv = talloc_get_type_abort(ntvfs->private_data,
842 struct ipc_private);
843 struct pipe_state *p, *next;
844
845 for (p=ipriv->pipe_list; p; p=next) {
846 next = p->next;
847 if (p->handle->session_info == req->session_info) {
848 talloc_free(p);
849 }
850 }
851
852 return NT_STATUS_OK;
853}
854
855/*
856 setup for an async call
857*/
858static NTSTATUS ipc_async_setup(struct ntvfs_module_context *ntvfs,
859 struct ntvfs_request *req,
860 void *private_data)
861{
862 return NT_STATUS_OK;
863}
864
865/*
866 cancel an async call
867*/
868static NTSTATUS ipc_cancel(struct ntvfs_module_context *ntvfs,
869 struct ntvfs_request *req)
870{
871 return NT_STATUS_UNSUCCESSFUL;
872}
873
874/*
875 lock a byte range
876*/
877static NTSTATUS ipc_lock(struct ntvfs_module_context *ntvfs,
878 struct ntvfs_request *req, union smb_lock *lck)
879{
880 return NT_STATUS_ACCESS_DENIED;
881}
882
883/*
884 set info on a open file
885*/
886static NTSTATUS ipc_setfileinfo(struct ntvfs_module_context *ntvfs,
887 struct ntvfs_request *req, union smb_setfileinfo *info)
888{
889 return NT_STATUS_ACCESS_DENIED;
890}
891
892/*
893 query info on a open file
894*/
895static NTSTATUS ipc_qfileinfo(struct ntvfs_module_context *ntvfs,
896 struct ntvfs_request *req, union smb_fileinfo *info)
897{
898 struct ipc_private *ipriv = talloc_get_type_abort(ntvfs->private_data,
899 struct ipc_private);
900 struct pipe_state *p = pipe_state_find(ipriv, info->generic.in.file.ntvfs);
901 if (!p) {
902 return NT_STATUS_INVALID_HANDLE;
903 }
904 switch (info->generic.level) {
905 case RAW_FILEINFO_GENERIC:
906 {
907 ZERO_STRUCT(info->generic.out);
908 info->generic.out.attrib = FILE_ATTRIBUTE_NORMAL;
909 info->generic.out.fname.s = strrchr(p->pipe_name, '\\');
910 info->generic.out.alloc_size = 4096;
911 info->generic.out.nlink = 1;
912 /* What the heck? Match Win2k3: IPC$ pipes are delete pending */
913 info->generic.out.delete_pending = 1;
914 return NT_STATUS_OK;
915 }
916 case RAW_FILEINFO_ALT_NAME_INFO:
917 case RAW_FILEINFO_ALT_NAME_INFORMATION:
918 case RAW_FILEINFO_STREAM_INFO:
919 case RAW_FILEINFO_STREAM_INFORMATION:
920 case RAW_FILEINFO_COMPRESSION_INFO:
921 case RAW_FILEINFO_COMPRESSION_INFORMATION:
922 case RAW_FILEINFO_NETWORK_OPEN_INFORMATION:
923 case RAW_FILEINFO_ATTRIBUTE_TAG_INFORMATION:
924 return NT_STATUS_INVALID_PARAMETER;
925 case RAW_FILEINFO_ALL_EAS:
926 return NT_STATUS_ACCESS_DENIED;
927 default:
928 return ntvfs_map_qfileinfo(ntvfs, req, info);
929 }
930
931 return NT_STATUS_ACCESS_DENIED;
932}
933
934
935/*
936 return filesystem info
937*/
938static NTSTATUS ipc_fsinfo(struct ntvfs_module_context *ntvfs,
939 struct ntvfs_request *req, union smb_fsinfo *fs)
940{
941 return NT_STATUS_ACCESS_DENIED;
942}
943
944/*
945 return print queue info
946*/
947static NTSTATUS ipc_lpq(struct ntvfs_module_context *ntvfs,
948 struct ntvfs_request *req, union smb_lpq *lpq)
949{
950 return NT_STATUS_ACCESS_DENIED;
951}
952
953/*
954 list files in a directory matching a wildcard pattern
955*/
956static NTSTATUS ipc_search_first(struct ntvfs_module_context *ntvfs,
957 struct ntvfs_request *req, union smb_search_first *io,
958 void *search_private,
959 bool (*callback)(void *, const union smb_search_data *))
960{
961 return NT_STATUS_ACCESS_DENIED;
962}
963
964/*
965 continue listing files in a directory
966*/
967static NTSTATUS ipc_search_next(struct ntvfs_module_context *ntvfs,
968 struct ntvfs_request *req, union smb_search_next *io,
969 void *search_private,
970 bool (*callback)(void *, const union smb_search_data *))
971{
972 return NT_STATUS_ACCESS_DENIED;
973}
974
975/*
976 end listing files in a directory
977*/
978static NTSTATUS ipc_search_close(struct ntvfs_module_context *ntvfs,
979 struct ntvfs_request *req, union smb_search_close *io)
980{
981 return NT_STATUS_ACCESS_DENIED;
982}
983
984struct ipc_trans_state {
985 struct ipc_private *ipriv;
986 struct pipe_state *p;
987 struct ntvfs_request *req;
988 struct smb_trans2 *trans;
989 struct iovec writev_iov;
990 struct ipc_readv_next_vector_state next_vector;
991};
992
993static void ipc_trans_writev_done(struct tevent_req *subreq);
994static void ipc_trans_readv_done(struct tevent_req *subreq);
995
996/* SMBtrans - handle a DCERPC command */
997static NTSTATUS ipc_dcerpc_cmd(struct ntvfs_module_context *ntvfs,
998 struct ntvfs_request *req, struct smb_trans2 *trans)
999{
1000 struct ipc_private *ipriv = talloc_get_type_abort(ntvfs->private_data,
1001 struct ipc_private);
1002 struct pipe_state *p;
1003 DATA_BLOB fnum_key;
1004 uint16_t fnum;
1005 struct ipc_trans_state *state;
1006 struct tevent_req *subreq;
1007
1008 /*
1009 * the fnum is in setup[1], a 16 bit value
1010 * the setup[*] values are already in host byteorder
1011 * but ntvfs_handle_search_by_wire_key() expects
1012 * network byteorder
1013 */
1014 SSVAL(&fnum, 0, trans->in.setup[1]);
1015 fnum_key = data_blob_const(&fnum, 2);
1016
1017 p = pipe_state_find_key(ipriv, req, &fnum_key);
1018 if (!p) {
1019 return NT_STATUS_INVALID_HANDLE;
1020 }
1021
1022 /*
1023 * Trans requests are only allowed
1024 * if no other Trans or Read is active
1025 */
1026 if (tevent_queue_length(p->read_queue) > 0) {
1027 return NT_STATUS_PIPE_BUSY;
1028 }
1029
1030 state = talloc(req, struct ipc_trans_state);
1031 NT_STATUS_HAVE_NO_MEMORY(state);
1032
1033 trans->out.setup_count = 0;
1034 trans->out.setup = NULL;
1035 trans->out.params = data_blob(NULL, 0);
1036 trans->out.data = data_blob_talloc(req, NULL, trans->in.max_data);
1037 NT_STATUS_HAVE_NO_MEMORY(trans->out.data.data);
1038
1039 state->ipriv = ipriv;
1040 state->p = p;
1041 state->req = req;
1042 state->trans = trans;
1043 state->writev_iov.iov_base = trans->in.data.data;
1044 state->writev_iov.iov_len = trans->in.data.length;
1045
1046 ipc_readv_next_vector_init(&state->next_vector,
1047 trans->out.data.data,
1048 trans->out.data.length);
1049
1050 subreq = tstream_writev_queue_send(state,
1051 ipriv->ntvfs->ctx->event_ctx,
1052 p->npipe,
1053 p->write_queue,
1054 &state->writev_iov, 1);
1055 NT_STATUS_HAVE_NO_MEMORY(subreq);
1056 tevent_req_set_callback(subreq, ipc_trans_writev_done, state);
1057
1058 req->async_states->state |= NTVFS_ASYNC_STATE_ASYNC;
1059 return NT_STATUS_OK;
1060}
1061
1062static void ipc_trans_writev_done(struct tevent_req *subreq)
1063{
1064 struct ipc_trans_state *state =
1065 tevent_req_callback_data(subreq,
1066 struct ipc_trans_state);
1067 struct ipc_private *ipriv = state->ipriv;
1068 struct pipe_state *p = state->p;
1069 struct ntvfs_request *req = state->req;
1070 int ret;
1071 int sys_errno;
1072 NTSTATUS status;
1073
1074 ret = tstream_writev_queue_recv(subreq, &sys_errno);
1075 TALLOC_FREE(subreq);
1076 if (ret == 0) {
1077 status = NT_STATUS_PIPE_DISCONNECTED;
1078 goto reply;
1079 } else if (ret == -1) {
1080 status = map_nt_error_from_unix(sys_errno);
1081 goto reply;
1082 }
1083
1084 subreq = tstream_readv_pdu_queue_send(state,
1085 ipriv->ntvfs->ctx->event_ctx,
1086 p->npipe,
1087 p->read_queue,
1088 ipc_readv_next_vector,
1089 &state->next_vector);
1090 if (!subreq) {
1091 status = NT_STATUS_NO_MEMORY;
1092 goto reply;
1093 }
1094 tevent_req_set_callback(subreq, ipc_trans_readv_done, state);
1095 return;
1096
1097reply:
1098 req->async_states->status = status;
1099 req->async_states->send_fn(req);
1100}
1101
1102static void ipc_trans_readv_done(struct tevent_req *subreq)
1103{
1104 struct ipc_trans_state *state =
1105 tevent_req_callback_data(subreq,
1106 struct ipc_trans_state);
1107 struct ntvfs_request *req = state->req;
1108 struct smb_trans2 *trans = state->trans;
1109 int ret;
1110 int sys_errno;
1111 NTSTATUS status;
1112
1113 ret = tstream_readv_pdu_queue_recv(subreq, &sys_errno);
1114 TALLOC_FREE(subreq);
1115 if (ret == -1) {
1116 status = map_nt_error_from_unix(sys_errno);
1117 goto reply;
1118 }
1119
1120 status = NT_STATUS_OK;
1121 if (state->next_vector.remaining > 0) {
1122 status = STATUS_BUFFER_OVERFLOW;
1123 }
1124
1125 trans->out.data.length = ret;
1126
1127reply:
1128 req->async_states->status = status;
1129 req->async_states->send_fn(req);
1130}
1131
1132/* SMBtrans - set named pipe state */
1133static NTSTATUS ipc_set_nm_pipe_state(struct ntvfs_module_context *ntvfs,
1134 struct ntvfs_request *req, struct smb_trans2 *trans)
1135{
1136 struct ipc_private *ipriv = talloc_get_type_abort(ntvfs->private_data,
1137 struct ipc_private);
1138 struct pipe_state *p;
1139 DATA_BLOB fnum_key;
1140
1141 /* the fnum is in setup[1] */
1142 fnum_key = data_blob_const(&trans->in.setup[1], sizeof(trans->in.setup[1]));
1143
1144 p = pipe_state_find_key(ipriv, req, &fnum_key);
1145 if (!p) {
1146 return NT_STATUS_INVALID_HANDLE;
1147 }
1148
1149 if (trans->in.params.length != 2) {
1150 return NT_STATUS_INVALID_PARAMETER;
1151 }
1152
1153 /*
1154 * TODO: pass this to the tstream_npa logic
1155 */
1156 p->device_state = SVAL(trans->in.params.data, 0);
1157
1158 trans->out.setup_count = 0;
1159 trans->out.setup = NULL;
1160 trans->out.params = data_blob(NULL, 0);
1161 trans->out.data = data_blob(NULL, 0);
1162
1163 return NT_STATUS_OK;
1164}
1165
1166
1167/* SMBtrans - used to provide access to SMB pipes */
1168static NTSTATUS ipc_trans(struct ntvfs_module_context *ntvfs,
1169 struct ntvfs_request *req, struct smb_trans2 *trans)
1170{
1171 NTSTATUS status;
1172
1173 if (strequal(trans->in.trans_name, "\\PIPE\\LANMAN"))
1174 return ipc_rap_call(req, ntvfs->ctx->event_ctx, ntvfs->ctx->lp_ctx, trans);
1175
1176 if (trans->in.setup_count != 2) {
1177 return NT_STATUS_INVALID_PARAMETER;
1178 }
1179
1180 switch (trans->in.setup[0]) {
1181 case TRANSACT_SETNAMEDPIPEHANDLESTATE:
1182 status = ipc_set_nm_pipe_state(ntvfs, req, trans);
1183 break;
1184 case TRANSACT_DCERPCCMD:
1185 status = ipc_dcerpc_cmd(ntvfs, req, trans);
1186 break;
1187 default:
1188 status = NT_STATUS_INVALID_PARAMETER;
1189 break;
1190 }
1191
1192 return status;
1193}
1194
1195struct ipc_ioctl_state {
1196 struct ipc_private *ipriv;
1197 struct pipe_state *p;
1198 struct ntvfs_request *req;
1199 union smb_ioctl *io;
1200 struct iovec writev_iov;
1201 struct ipc_readv_next_vector_state next_vector;
1202};
1203
1204static void ipc_ioctl_writev_done(struct tevent_req *subreq);
1205static void ipc_ioctl_readv_done(struct tevent_req *subreq);
1206
1207static NTSTATUS ipc_ioctl_smb2(struct ntvfs_module_context *ntvfs,
1208 struct ntvfs_request *req, union smb_ioctl *io)
1209{
1210 struct ipc_private *ipriv = talloc_get_type_abort(ntvfs->private_data,
1211 struct ipc_private);
1212 struct pipe_state *p;
1213 struct ipc_ioctl_state *state;
1214 struct tevent_req *subreq;
1215
1216 switch (io->smb2.in.function) {
1217 case FSCTL_NAMED_PIPE_READ_WRITE:
1218 break;
1219
1220 default:
1221 return NT_STATUS_FS_DRIVER_REQUIRED;
1222 }
1223
1224 p = pipe_state_find(ipriv, io->smb2.in.file.ntvfs);
1225 if (!p) {
1226 return NT_STATUS_INVALID_HANDLE;
1227 }
1228
1229 /*
1230 * Trans requests are only allowed
1231 * if no other Trans or Read is active
1232 */
1233 if (tevent_queue_length(p->read_queue) > 0) {
1234 return NT_STATUS_PIPE_BUSY;
1235 }
1236
1237 state = talloc(req, struct ipc_ioctl_state);
1238 NT_STATUS_HAVE_NO_MEMORY(state);
1239
1240 io->smb2.out._pad = 0;
1241 io->smb2.out.function = io->smb2.in.function;
1242 io->smb2.out.unknown2 = 0;
1243 io->smb2.out.unknown3 = 0;
1244 io->smb2.out.in = io->smb2.in.out;
1245 io->smb2.out.out = data_blob_talloc(req, NULL, io->smb2.in.max_response_size);
1246 NT_STATUS_HAVE_NO_MEMORY(io->smb2.out.out.data);
1247
1248 state->ipriv = ipriv;
1249 state->p = p;
1250 state->req = req;
1251 state->io = io;
1252 state->writev_iov.iov_base = io->smb2.in.out.data;
1253 state->writev_iov.iov_len = io->smb2.in.out.length;
1254
1255 ipc_readv_next_vector_init(&state->next_vector,
1256 io->smb2.out.out.data,
1257 io->smb2.out.out.length);
1258
1259 subreq = tstream_writev_queue_send(state,
1260 ipriv->ntvfs->ctx->event_ctx,
1261 p->npipe,
1262 p->write_queue,
1263 &state->writev_iov, 1);
1264 NT_STATUS_HAVE_NO_MEMORY(subreq);
1265 tevent_req_set_callback(subreq, ipc_ioctl_writev_done, state);
1266
1267 req->async_states->state |= NTVFS_ASYNC_STATE_ASYNC;
1268 return NT_STATUS_OK;
1269}
1270
1271static void ipc_ioctl_writev_done(struct tevent_req *subreq)
1272{
1273 struct ipc_ioctl_state *state =
1274 tevent_req_callback_data(subreq,
1275 struct ipc_ioctl_state);
1276 struct ipc_private *ipriv = state->ipriv;
1277 struct pipe_state *p = state->p;
1278 struct ntvfs_request *req = state->req;
1279 int ret;
1280 int sys_errno;
1281 NTSTATUS status;
1282
1283 ret = tstream_writev_queue_recv(subreq, &sys_errno);
1284 TALLOC_FREE(subreq);
1285 if (ret == -1) {
1286 status = map_nt_error_from_unix(sys_errno);
1287 goto reply;
1288 }
1289
1290 subreq = tstream_readv_pdu_queue_send(state,
1291 ipriv->ntvfs->ctx->event_ctx,
1292 p->npipe,
1293 p->read_queue,
1294 ipc_readv_next_vector,
1295 &state->next_vector);
1296 if (!subreq) {
1297 status = NT_STATUS_NO_MEMORY;
1298 goto reply;
1299 }
1300 tevent_req_set_callback(subreq, ipc_ioctl_readv_done, state);
1301 return;
1302
1303reply:
1304 req->async_states->status = status;
1305 req->async_states->send_fn(req);
1306}
1307
1308static void ipc_ioctl_readv_done(struct tevent_req *subreq)
1309{
1310 struct ipc_ioctl_state *state =
1311 tevent_req_callback_data(subreq,
1312 struct ipc_ioctl_state);
1313 struct ntvfs_request *req = state->req;
1314 union smb_ioctl *io = state->io;
1315 int ret;
1316 int sys_errno;
1317 NTSTATUS status;
1318
1319 ret = tstream_readv_pdu_queue_recv(subreq, &sys_errno);
1320 TALLOC_FREE(subreq);
1321 if (ret == -1) {
1322 status = map_nt_error_from_unix(sys_errno);
1323 goto reply;
1324 }
1325
1326 status = NT_STATUS_OK;
1327 if (state->next_vector.remaining > 0) {
1328 status = STATUS_BUFFER_OVERFLOW;
1329 }
1330
1331 io->smb2.out.out.length = ret;
1332
1333reply:
1334 req->async_states->status = status;
1335 req->async_states->send_fn(req);
1336}
1337
1338/*
1339 ioctl interface
1340*/
1341static NTSTATUS ipc_ioctl(struct ntvfs_module_context *ntvfs,
1342 struct ntvfs_request *req, union smb_ioctl *io)
1343{
1344 switch (io->generic.level) {
1345 case RAW_IOCTL_SMB2:
1346 return ipc_ioctl_smb2(ntvfs, req, io);
1347
1348 case RAW_IOCTL_SMB2_NO_HANDLE:
1349 return NT_STATUS_FS_DRIVER_REQUIRED;
1350
1351 default:
1352 return NT_STATUS_ACCESS_DENIED;
1353 }
1354
1355 return NT_STATUS_ACCESS_DENIED;
1356}
1357
1358
1359/*
1360 initialialise the IPC backend, registering ourselves with the ntvfs subsystem
1361 */
1362NTSTATUS ntvfs_ipc_init(void)
1363{
1364 NTSTATUS ret;
1365 struct ntvfs_ops ops;
1366 NTVFS_CURRENT_CRITICAL_SIZES(vers);
1367
1368 ZERO_STRUCT(ops);
1369
1370 /* fill in the name and type */
1371 ops.name = "default";
1372 ops.type = NTVFS_IPC;
1373
1374 /* fill in all the operations */
1375 ops.connect = ipc_connect;
1376 ops.disconnect = ipc_disconnect;
1377 ops.unlink = ipc_unlink;
1378 ops.chkpath = ipc_chkpath;
1379 ops.qpathinfo = ipc_qpathinfo;
1380 ops.setpathinfo = ipc_setpathinfo;
1381 ops.open = ipc_open;
1382 ops.mkdir = ipc_mkdir;
1383 ops.rmdir = ipc_rmdir;
1384 ops.rename = ipc_rename;
1385 ops.copy = ipc_copy;
1386 ops.ioctl = ipc_ioctl;
1387 ops.read = ipc_read;
1388 ops.write = ipc_write;
1389 ops.seek = ipc_seek;
1390 ops.flush = ipc_flush;
1391 ops.close = ipc_close;
1392 ops.exit = ipc_exit;
1393 ops.lock = ipc_lock;
1394 ops.setfileinfo = ipc_setfileinfo;
1395 ops.qfileinfo = ipc_qfileinfo;
1396 ops.fsinfo = ipc_fsinfo;
1397 ops.lpq = ipc_lpq;
1398 ops.search_first = ipc_search_first;
1399 ops.search_next = ipc_search_next;
1400 ops.search_close = ipc_search_close;
1401 ops.trans = ipc_trans;
1402 ops.logoff = ipc_logoff;
1403 ops.async_setup = ipc_async_setup;
1404 ops.cancel = ipc_cancel;
1405
1406 /* register ourselves with the NTVFS subsystem. */
1407 ret = ntvfs_register(&ops, &vers);
1408
1409 if (!NT_STATUS_IS_OK(ret)) {
1410 DEBUG(0,("Failed to register IPC backend!\n"));
1411 return ret;
1412 }
1413
1414 return ret;
1415}
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