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 /* PIPE/<name>/<pid>/<pnum> */
36 #define PIPEDB_KEY_FORMAT "PIPE/%s/%u/%d"
43 char name[MAX_PIPE_NAME_LEN];
48 extern struct pipe_id_info pipe_names[];
50 /****************************************************************************
51 Reply to an open and X on a named pipe.
52 This code is basically stolen from reply_open_and_X with some
53 wrinkles to handle pipes.
54 ****************************************************************************/
56 void reply_open_pipe_and_X(connection_struct *conn, struct smb_request *req)
58 const char *fname = NULL;
59 char *pipe_name = NULL;
61 int size=0,fmode=0,mtime=0,rmode=0;
63 TALLOC_CTX *ctx = talloc_tos();
65 /* XXXX we need to handle passed times, sattr and flags */
66 srvstr_pull_buf_talloc(ctx, req->inbuf, req->flags2, &pipe_name,
67 smb_buf(req->inbuf), STR_TERMINATE);
69 reply_botherror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND,
74 /* If the name doesn't start \PIPE\ then this is directed */
75 /* at a mailslot or something we really, really don't understand, */
76 /* not just something we really don't understand. */
77 if ( strncmp(pipe_name,PIPE,PIPELEN) != 0 ) {
78 reply_doserror(req, ERRSRV, ERRaccess);
82 DEBUG(4,("Opening pipe %s.\n", pipe_name));
84 /* See if it is one we want to handle. */
85 for( i = 0; pipe_names[i].client_pipe ; i++ ) {
86 if( strequal(pipe_name,pipe_names[i].client_pipe)) {
91 if (pipe_names[i].client_pipe == NULL) {
92 reply_botherror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND,
97 /* Strip \PIPE\ off the name. */
98 fname = pipe_name + PIPELEN;
102 * Hack for NT printers... JRA.
104 if(should_fail_next_srvsvc_open(fname)) {
105 reply_doserror(req, ERRSRV, ERRaccess);
110 /* Known pipes arrive with DIR attribs. Remove it so a regular file */
111 /* can be opened and add it in after the open. */
112 DEBUG(3,("Known pipe %s opening.\n",fname));
114 p = open_rpc_pipe_p(fname, conn, req->vuid);
116 reply_doserror(req, ERRSRV, ERRnofids);
120 /* Prepare the reply */
121 reply_outbuf(req, 15, 0);
123 /* Mark the opened file as an existing named pipe in message mode. */
124 SSVAL(req->outbuf,smb_vwv9,2);
125 SSVAL(req->outbuf,smb_vwv10,0xc700);
128 DEBUG(4,("Resetting open result to open from create.\n"));
132 SSVAL(req->outbuf,smb_vwv2, p->pnum);
133 SSVAL(req->outbuf,smb_vwv3,fmode);
134 srv_put_dos_date3((char *)req->outbuf,smb_vwv4,mtime);
135 SIVAL(req->outbuf,smb_vwv6,size);
136 SSVAL(req->outbuf,smb_vwv8,rmode);
137 SSVAL(req->outbuf,smb_vwv11,0x0001);
143 /****************************************************************************
144 Reply to a write on a pipe.
145 ****************************************************************************/
147 void reply_pipe_write(struct smb_request *req)
149 smb_np_struct *p = get_rpc_pipe_p(SVAL(req->inbuf,smb_vwv0));
150 size_t numtowrite = SVAL(req->inbuf,smb_vwv1);
155 reply_doserror(req, ERRDOS, ERRbadfid);
159 if (p->vuid != req->vuid) {
160 reply_nterror(req, NT_STATUS_INVALID_HANDLE);
164 data = smb_buf(req->inbuf) + 3;
166 if (numtowrite == 0) {
169 nwritten = write_to_pipe(p, data, numtowrite);
172 if ((nwritten == 0 && numtowrite != 0) || (nwritten < 0)) {
173 reply_unixerror(req, ERRDOS, ERRnoaccess);
177 reply_outbuf(req, 1, 0);
179 SSVAL(req->outbuf,smb_vwv0,nwritten);
181 DEBUG(3,("write-IPC pnum=%04x nwritten=%d\n", p->pnum, nwritten));
186 /****************************************************************************
187 Reply to a write and X.
189 This code is basically stolen from reply_write_and_X with some
190 wrinkles to handle pipes.
191 ****************************************************************************/
193 void reply_pipe_write_and_X(struct smb_request *req)
195 smb_np_struct *p = get_rpc_pipe_p(SVAL(req->inbuf,smb_vwv2));
196 size_t numtowrite = SVAL(req->inbuf,smb_vwv10);
198 int smb_doff = SVAL(req->inbuf, smb_vwv11);
199 bool pipe_start_message_raw =
200 ((SVAL(req->inbuf, smb_vwv7)
201 & (PIPE_START_MESSAGE|PIPE_RAW_MODE))
202 == (PIPE_START_MESSAGE|PIPE_RAW_MODE));
206 reply_doserror(req, ERRDOS, ERRbadfid);
210 if (p->vuid != req->vuid) {
211 reply_nterror(req, NT_STATUS_INVALID_HANDLE);
215 data = smb_base(req->inbuf) + smb_doff;
217 if (numtowrite == 0) {
220 if(pipe_start_message_raw) {
222 * For the start of a message in named pipe byte mode,
223 * the first two bytes are a length-of-pdu field. Ignore
224 * them (we don't trust the client). JRA.
227 DEBUG(0,("reply_pipe_write_and_X: start of "
228 "message set and not enough data "
230 (unsigned int)numtowrite ));
231 reply_unixerror(req, ERRDOS, ERRnoaccess);
238 nwritten = write_to_pipe(p, data, numtowrite);
241 if ((nwritten == 0 && numtowrite != 0) || (nwritten < 0)) {
242 reply_unixerror(req, ERRDOS,ERRnoaccess);
246 reply_outbuf(req, 6, 0);
248 nwritten = (pipe_start_message_raw ? nwritten + 2 : nwritten);
249 SSVAL(req->outbuf,smb_vwv2,nwritten);
251 DEBUG(3,("writeX-IPC pnum=%04x nwritten=%d\n", p->pnum, nwritten));
256 /****************************************************************************
257 Reply to a read and X.
258 This code is basically stolen from reply_read_and_X with some
259 wrinkles to handle pipes.
260 ****************************************************************************/
262 void reply_pipe_read_and_X(struct smb_request *req)
264 smb_np_struct *p = get_rpc_pipe_p(SVAL(req->inbuf,smb_vwv2));
265 int smb_maxcnt = SVAL(req->inbuf,smb_vwv5);
266 int smb_mincnt = SVAL(req->inbuf,smb_vwv6);
271 /* we don't use the offset given to use for pipe reads. This
272 is deliberate, instead we always return the next lump of
275 uint32 smb_offs = IVAL(req->inbuf,smb_vwv3);
279 reply_doserror(req, ERRDOS, ERRbadfid);
283 reply_outbuf(req, 12, smb_maxcnt);
285 data = smb_buf(req->outbuf);
287 nread = read_from_pipe(p, data, smb_maxcnt, &unused);
290 reply_doserror(req, ERRDOS, ERRnoaccess);
294 set_message((char *)req->outbuf, 12, nread, False);
296 SSVAL(req->outbuf,smb_vwv5,nread);
297 SSVAL(req->outbuf,smb_vwv6,smb_offset(data,req->outbuf));
298 SSVAL(smb_buf(req->outbuf),-2,nread);
300 DEBUG(3,("readX-IPC pnum=%04x min=%d max=%d nread=%d\n",
301 p->pnum, smb_mincnt, smb_maxcnt, nread));
306 /****************************************************************************
308 ****************************************************************************/
310 void reply_pipe_close(connection_struct *conn, struct smb_request *req)
312 smb_np_struct *p = get_rpc_pipe_p(SVAL(req->inbuf,smb_vwv0));
315 reply_doserror(req, ERRDOS, ERRbadfid);
319 DEBUG(5,("reply_pipe_close: pnum:%x\n", p->pnum));
321 if (!close_rpc_pipe_hnd(p)) {
322 reply_doserror(req, ERRDOS, ERRbadfid);
326 /* TODO: REMOVE PIPE FROM DB */
328 reply_outbuf(req, 0, 0);