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 /****************************************************************************
36 Reply to an open and X on a named pipe.
37 This code is basically stolen from reply_open_and_X with some
38 wrinkles to handle pipes.
39 ****************************************************************************/
41 void reply_open_pipe_and_X(connection_struct *conn, struct smb_request *req)
43 const char *fname = NULL;
44 char *pipe_name = NULL;
46 int size=0,fmode=0,mtime=0,rmode=0;
47 TALLOC_CTX *ctx = talloc_tos();
50 /* XXXX we need to handle passed times, sattr and flags */
51 srvstr_pull_req_talloc(ctx, req, &pipe_name, req->buf, STR_TERMINATE);
53 reply_botherror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND,
58 /* If the name doesn't start \PIPE\ then this is directed */
59 /* at a mailslot or something we really, really don't understand, */
60 /* not just something we really don't understand. */
61 if ( strncmp(pipe_name,PIPE,PIPELEN) != 0 ) {
62 reply_doserror(req, ERRSRV, ERRaccess);
66 DEBUG(4,("Opening pipe %s.\n", pipe_name));
68 /* Strip \PIPE\ off the name. */
69 fname = pipe_name + PIPELEN;
73 * Hack for NT printers... JRA.
75 if(should_fail_next_srvsvc_open(fname)) {
76 reply_doserror(req, ERRSRV, ERRaccess);
81 status = np_open(req, fname, &fsp);
82 if (!NT_STATUS_IS_OK(status)) {
83 if (NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
84 reply_botherror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND,
88 reply_nterror(req, status);
92 /* Prepare the reply */
93 reply_outbuf(req, 15, 0);
95 /* Mark the opened file as an existing named pipe in message mode. */
96 SSVAL(req->outbuf,smb_vwv9,2);
97 SSVAL(req->outbuf,smb_vwv10,0xc700);
100 DEBUG(4,("Resetting open result to open from create.\n"));
104 SSVAL(req->outbuf,smb_vwv2, fsp->fnum);
105 SSVAL(req->outbuf,smb_vwv3,fmode);
106 srv_put_dos_date3((char *)req->outbuf,smb_vwv4,mtime);
107 SIVAL(req->outbuf,smb_vwv6,size);
108 SSVAL(req->outbuf,smb_vwv8,rmode);
109 SSVAL(req->outbuf,smb_vwv11,0x0001);
115 /****************************************************************************
116 Reply to a write on a pipe.
117 ****************************************************************************/
119 void reply_pipe_write(struct smb_request *req)
121 files_struct *fsp = file_fsp(req, SVAL(req->vwv+0, 0));
122 size_t numtowrite = SVAL(req->vwv+1, 0);
126 if (!fsp_is_np(fsp)) {
127 reply_doserror(req, ERRDOS, ERRbadfid);
131 if (fsp->vuid != req->vuid) {
132 reply_nterror(req, NT_STATUS_INVALID_HANDLE);
138 if (numtowrite == 0) {
142 status = np_write(fsp, data, numtowrite, &nwritten);
143 if (!NT_STATUS_IS_OK(status)) {
144 reply_nterror(req, status);
149 if ((nwritten == 0 && numtowrite != 0) || (nwritten < 0)) {
150 reply_unixerror(req, ERRDOS, ERRnoaccess);
154 reply_outbuf(req, 1, 0);
156 SSVAL(req->outbuf,smb_vwv0,nwritten);
158 DEBUG(3,("write-IPC pnum=%04x nwritten=%d\n", fsp->fnum,
164 /****************************************************************************
165 Reply to a write and X.
167 This code is basically stolen from reply_write_and_X with some
168 wrinkles to handle pipes.
169 ****************************************************************************/
171 void reply_pipe_write_and_X(struct smb_request *req)
173 files_struct *fsp = file_fsp(req, SVAL(req->vwv+2, 0));
174 size_t numtowrite = SVAL(req->vwv+10, 0);
176 int smb_doff = SVAL(req->vwv+11, 0);
177 bool pipe_start_message_raw =
178 ((SVAL(req->vwv+7, 0) & (PIPE_START_MESSAGE|PIPE_RAW_MODE))
179 == (PIPE_START_MESSAGE|PIPE_RAW_MODE));
182 if (!fsp_is_np(fsp)) {
183 reply_doserror(req, ERRDOS, ERRbadfid);
187 if (fsp->vuid != req->vuid) {
188 reply_nterror(req, NT_STATUS_INVALID_HANDLE);
192 data = (uint8_t *)smb_base(req->inbuf) + smb_doff;
194 if (numtowrite == 0) {
199 if(pipe_start_message_raw) {
201 * For the start of a message in named pipe byte mode,
202 * the first two bytes are a length-of-pdu field. Ignore
203 * them (we don't trust the client). JRA.
206 DEBUG(0,("reply_pipe_write_and_X: start of "
207 "message set and not enough data "
209 (unsigned int)numtowrite ));
210 reply_unixerror(req, ERRDOS, ERRnoaccess);
217 status = np_write(fsp, data, numtowrite, &nwritten);
218 if (!NT_STATUS_IS_OK(status)) {
219 reply_nterror(req, status);
224 if ((nwritten == 0 && numtowrite != 0) || (nwritten < 0)) {
225 reply_unixerror(req, ERRDOS,ERRnoaccess);
229 reply_outbuf(req, 6, 0);
231 nwritten = (pipe_start_message_raw ? nwritten + 2 : nwritten);
232 SSVAL(req->outbuf,smb_vwv2,nwritten);
234 DEBUG(3,("writeX-IPC pnum=%04x nwritten=%d\n", fsp->fnum,
240 /****************************************************************************
241 Reply to a read and X.
242 This code is basically stolen from reply_read_and_X with some
243 wrinkles to handle pipes.
244 ****************************************************************************/
246 void reply_pipe_read_and_X(struct smb_request *req)
248 files_struct *fsp = file_fsp(req, SVAL(req->vwv+0, 0));
249 int smb_maxcnt = SVAL(req->vwv+5, 0);
250 int smb_mincnt = SVAL(req->vwv+6, 0);
256 /* we don't use the offset given to use for pipe reads. This
257 is deliberate, instead we always return the next lump of
260 uint32 smb_offs = IVAL(req->vwv+3, 0);
263 if (!fsp_is_np(fsp)) {
264 reply_doserror(req, ERRDOS, ERRbadfid);
268 if (fsp->vuid != req->vuid) {
269 reply_nterror(req, NT_STATUS_INVALID_HANDLE);
273 reply_outbuf(req, 12, smb_maxcnt);
275 data = (uint8_t *)smb_buf(req->outbuf);
277 status = np_read(fsp, data, smb_maxcnt, &nread, &unused);
279 if (!NT_STATUS_IS_OK(status)) {
280 reply_doserror(req, ERRDOS, ERRnoaccess);
284 srv_set_message((char *)req->outbuf, 12, nread, False);
286 SSVAL(req->outbuf,smb_vwv5,nread);
287 SSVAL(req->outbuf,smb_vwv6,smb_offset(data,req->outbuf));
288 SSVAL(smb_buf(req->outbuf),-2,nread);
290 DEBUG(3,("readX-IPC pnum=%04x min=%d max=%d nread=%d\n",
291 fsp->fnum, smb_mincnt, smb_maxcnt, (int)nread));