2 Unix SMB/CIFS implementation.
3 Pipe SMB reply routines
4 Copyright (C) Andrew Tridgell 1992-1998
5 Copyright (C) Luke Kenneth Casson Leighton 1996-1998
6 Copyright (C) Paul Ashton 1997-1998.
7 Copyright (C) Jeremy Allison 2005.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>.
23 This file handles reply_ calls on named pipes that the server
24 makes to handle specific protocols
30 #define PIPE "\\PIPE\\"
31 #define PIPELEN strlen(PIPE)
33 #define MAX_PIPE_NAME_LEN 24
35 NTSTATUS open_np_file(struct smb_request *smb_req, const char *name,
36 struct files_struct **pfsp)
38 struct connection_struct *conn = smb_req->conn;
39 struct files_struct *fsp;
42 status = file_new(smb_req, conn, &fsp);
43 if (!NT_STATUS_IS_OK(status)) {
44 DEBUG(0, ("file_new failed: %s\n", nt_errstr(status)));
50 fsp->vuid = smb_req->vuid;
51 fsp->can_lock = false;
52 fsp->access_mask = FILE_READ_DATA | FILE_WRITE_DATA;
53 string_set(&fsp->fsp_name, name);
55 status = np_open(NULL, name, conn->client_address,
56 conn->server_info, &fsp->fake_file_handle);
57 if (!NT_STATUS_IS_OK(status)) {
58 DEBUG(10, ("np_open(%s) returned %s\n", name,
60 file_free(smb_req, fsp);
69 /****************************************************************************
70 Reply to an open and X on a named pipe.
71 This code is basically stolen from reply_open_and_X with some
72 wrinkles to handle pipes.
73 ****************************************************************************/
75 void reply_open_pipe_and_X(connection_struct *conn, struct smb_request *req)
77 const char *fname = NULL;
78 char *pipe_name = NULL;
80 TALLOC_CTX *ctx = talloc_tos();
83 /* XXXX we need to handle passed times, sattr and flags */
84 srvstr_pull_req_talloc(ctx, req, &pipe_name, req->buf, STR_TERMINATE);
86 reply_botherror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND,
91 /* If the name doesn't start \PIPE\ then this is directed */
92 /* at a mailslot or something we really, really don't understand, */
93 /* not just something we really don't understand. */
94 if ( strncmp(pipe_name,PIPE,PIPELEN) != 0 ) {
95 reply_doserror(req, ERRSRV, ERRaccess);
99 DEBUG(4,("Opening pipe %s.\n", pipe_name));
101 /* Strip \PIPE\ off the name. */
102 fname = pipe_name + PIPELEN;
106 * Hack for NT printers... JRA.
108 if(should_fail_next_srvsvc_open(fname)) {
109 reply_doserror(req, ERRSRV, ERRaccess);
114 status = open_np_file(req, fname, &fsp);
115 if (!NT_STATUS_IS_OK(status)) {
116 if (NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
117 reply_botherror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND,
121 reply_nterror(req, status);
125 /* Prepare the reply */
126 reply_outbuf(req, 15, 0);
128 /* Mark the opened file as an existing named pipe in message mode. */
129 SSVAL(req->outbuf,smb_vwv9,2);
130 SSVAL(req->outbuf,smb_vwv10,0xc700);
132 SSVAL(req->outbuf, smb_vwv2, fsp->fnum);
133 SSVAL(req->outbuf, smb_vwv3, 0); /* fmode */
134 srv_put_dos_date3((char *)req->outbuf, smb_vwv4, 0); /* mtime */
135 SIVAL(req->outbuf, smb_vwv6, 0); /* size */
136 SSVAL(req->outbuf, smb_vwv8, 0); /* rmode */
137 SSVAL(req->outbuf, smb_vwv11, 0x0001);
143 /****************************************************************************
144 Reply to a write on a pipe.
145 ****************************************************************************/
147 struct pipe_write_state {
151 static void pipe_write_done(struct async_req *subreq);
153 void reply_pipe_write(struct smb_request *req)
155 files_struct *fsp = file_fsp(req, SVAL(req->vwv+0, 0));
157 struct pipe_write_state *state;
158 struct async_req *subreq;
160 if (!fsp_is_np(fsp)) {
161 reply_doserror(req, ERRDOS, ERRbadfid);
165 if (fsp->vuid != req->vuid) {
166 reply_nterror(req, NT_STATUS_INVALID_HANDLE);
170 state = talloc(req, struct pipe_write_state);
172 reply_nterror(req, NT_STATUS_NO_MEMORY);
175 req->async_priv = state;
177 state->numtowrite = SVAL(req->vwv+1, 0);
181 DEBUG(6, ("reply_pipe_write: %x name: %s len: %d\n", (int)fsp->fnum,
182 fsp->fsp_name, (int)state->numtowrite));
184 subreq = np_write_send(state, smbd_event_context(),
185 fsp->fake_file_handle, data, state->numtowrite);
186 if (subreq == NULL) {
188 reply_nterror(req, NT_STATUS_NO_MEMORY);
191 subreq->async.fn = pipe_write_done;
192 subreq->async.priv = talloc_move(req->conn, &req);
195 static void pipe_write_done(struct async_req *subreq)
197 struct smb_request *req = talloc_get_type_abort(
198 subreq->async.priv, struct smb_request);
199 struct pipe_write_state *state = talloc_get_type_abort(
200 req->async_priv, struct pipe_write_state);
202 ssize_t nwritten = -1;
204 status = np_write_recv(subreq, &nwritten);
206 if ((nwritten == 0 && state->numtowrite != 0) || (nwritten < 0)) {
207 reply_unixerror(req, ERRDOS, ERRnoaccess);
211 reply_outbuf(req, 1, 0);
213 SSVAL(req->outbuf,smb_vwv0,nwritten);
215 DEBUG(3,("write-IPC nwritten=%d\n", (int)nwritten));
218 if (!srv_send_smb(smbd_server_fd(), (char *)req->outbuf,
219 IS_CONN_ENCRYPTED(req->conn)||req->encrypted)) {
220 exit_server_cleanly("construct_reply: srv_send_smb failed.");
225 /****************************************************************************
226 Reply to a write and X.
228 This code is basically stolen from reply_write_and_X with some
229 wrinkles to handle pipes.
230 ****************************************************************************/
232 struct pipe_write_andx_state {
233 bool pipe_start_message_raw;
237 static void pipe_write_andx_done(struct async_req *subreq);
239 void reply_pipe_write_and_X(struct smb_request *req)
241 files_struct *fsp = file_fsp(req, SVAL(req->vwv+2, 0));
242 int smb_doff = SVAL(req->vwv+11, 0);
244 struct pipe_write_andx_state *state;
245 struct async_req *subreq;
247 if (!fsp_is_np(fsp)) {
248 reply_doserror(req, ERRDOS, ERRbadfid);
252 if (fsp->vuid != req->vuid) {
253 reply_nterror(req, NT_STATUS_INVALID_HANDLE);
257 state = talloc(req, struct pipe_write_andx_state);
259 reply_nterror(req, NT_STATUS_NO_MEMORY);
262 req->async_priv = state;
264 state->numtowrite = SVAL(req->vwv+10, 0);
265 state->pipe_start_message_raw =
266 ((SVAL(req->vwv+7, 0) & (PIPE_START_MESSAGE|PIPE_RAW_MODE))
267 == (PIPE_START_MESSAGE|PIPE_RAW_MODE));
269 DEBUG(6, ("reply_pipe_write_and_X: %x name: %s len: %d\n",
270 (int)fsp->fnum, fsp->fsp_name, (int)state->numtowrite));
272 data = (uint8_t *)smb_base(req->inbuf) + smb_doff;
274 if (state->pipe_start_message_raw) {
276 * For the start of a message in named pipe byte mode,
277 * the first two bytes are a length-of-pdu field. Ignore
278 * them (we don't trust the client). JRA.
280 if (state->numtowrite < 2) {
281 DEBUG(0,("reply_pipe_write_and_X: start of message "
282 "set and not enough data sent.(%u)\n",
283 (unsigned int)state->numtowrite ));
284 reply_unixerror(req, ERRDOS, ERRnoaccess);
289 state->numtowrite -= 2;
292 subreq = np_write_send(state, smbd_event_context(),
293 fsp->fake_file_handle, data, state->numtowrite);
294 if (subreq == NULL) {
296 reply_nterror(req, NT_STATUS_NO_MEMORY);
299 subreq->async.fn = pipe_write_andx_done;
300 subreq->async.priv = talloc_move(req->conn, &req);
303 static void pipe_write_andx_done(struct async_req *subreq)
305 struct smb_request *req = talloc_get_type_abort(
306 subreq->async.priv, struct smb_request);
307 struct pipe_write_andx_state *state = talloc_get_type_abort(
308 req->async_priv, struct pipe_write_andx_state);
310 ssize_t nwritten = -1;
312 status = np_write_recv(subreq, &nwritten);
314 if (!NT_STATUS_IS_OK(status) || (nwritten != state->numtowrite)) {
315 reply_unixerror(req, ERRDOS,ERRnoaccess);
319 reply_outbuf(req, 6, 0);
321 nwritten = (state->pipe_start_message_raw ? nwritten + 2 : nwritten);
322 SSVAL(req->outbuf,smb_vwv2,nwritten);
324 DEBUG(3,("writeX-IPC nwritten=%d\n", (int)nwritten));
330 /****************************************************************************
331 Reply to a read and X.
332 This code is basically stolen from reply_read_and_X with some
333 wrinkles to handle pipes.
334 ****************************************************************************/
336 struct pipe_read_andx_state {
342 static void pipe_read_andx_done(struct async_req *subreq);
344 void reply_pipe_read_and_X(struct smb_request *req)
346 files_struct *fsp = file_fsp(req, SVAL(req->vwv+0, 0));
348 struct pipe_read_andx_state *state;
349 struct async_req *subreq;
351 /* we don't use the offset given to use for pipe reads. This
352 is deliberate, instead we always return the next lump of
355 uint32 smb_offs = IVAL(req->vwv+3, 0);
358 if (!fsp_is_np(fsp)) {
359 reply_doserror(req, ERRDOS, ERRbadfid);
363 if (fsp->vuid != req->vuid) {
364 reply_nterror(req, NT_STATUS_INVALID_HANDLE);
368 state = talloc(req, struct pipe_read_andx_state);
370 reply_nterror(req, NT_STATUS_NO_MEMORY);
373 req->async_priv = state;
375 state->smb_maxcnt = SVAL(req->vwv+5, 0);
376 state->smb_mincnt = SVAL(req->vwv+6, 0);
378 reply_outbuf(req, 12, state->smb_maxcnt);
379 data = (uint8_t *)smb_buf(req->outbuf);
382 * We have to tell the upper layers that we're async.
384 state->outbuf = req->outbuf;
387 subreq = np_read_send(state, smbd_event_context(),
388 fsp->fake_file_handle, data,
390 if (subreq == NULL) {
391 reply_nterror(req, NT_STATUS_NO_MEMORY);
394 subreq->async.fn = pipe_read_andx_done;
395 subreq->async.priv = talloc_move(req->conn, &req);
398 static void pipe_read_andx_done(struct async_req *subreq)
400 struct smb_request *req = talloc_get_type_abort(
401 subreq->async.priv, struct smb_request);
402 struct pipe_read_andx_state *state = talloc_get_type_abort(
403 req->async_priv, struct pipe_read_andx_state);
406 bool is_data_outstanding;
408 status = np_read_recv(subreq, &nread, &is_data_outstanding);
410 if (!NT_STATUS_IS_OK(status)) {
411 reply_nterror(req, status);
415 req->outbuf = state->outbuf;
416 state->outbuf = NULL;
418 srv_set_message((char *)req->outbuf, 12, nread, False);
420 SSVAL(req->outbuf,smb_vwv5,nread);
421 SSVAL(req->outbuf,smb_vwv6,
423 + 1 /* the wct field */
424 + 12 * sizeof(uint16_t) /* vwv */
425 + 2); /* the buflen field */
426 SSVAL(req->outbuf,smb_vwv11,state->smb_maxcnt);
428 DEBUG(3,("readX-IPC min=%d max=%d nread=%d\n",
429 state->smb_mincnt, state->smb_maxcnt, (int)nread));