2 Unix SMB/Netbios implementation.
4 Pipe SMB reply routines
5 Copyright (C) Andrew Tridgell 1992-1998
6 Copyright (C) Luke Kenneth Casson Leighton 1996-1998
7 Copyright (C) Paul Ashton 1997-1998.
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 2 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, write to the Free Software
21 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 This file handles reply_ calls on named pipes that the server
25 makes to handle specific protocols
31 #define PIPE "\\PIPE\\"
32 #define PIPELEN strlen(PIPE)
34 extern struct pipe_id_info pipe_names[];
36 /****************************************************************************
37 reply to an open and X on a named pipe
39 This code is basically stolen from reply_open_and_X with some
40 wrinkles to handle pipes.
41 ****************************************************************************/
42 int reply_open_pipe_and_X(connection_struct *conn,
43 char *inbuf,char *outbuf,int length,int bufsize)
47 uint16 vuid = SVAL(inbuf, smb_uid);
49 int smb_ofun = SVAL(inbuf,smb_vwv8);
50 int size=0,fmode=0,mtime=0,rmode=0;
53 /* XXXX we need to handle passed times, sattr and flags */
54 srvstr_pull(inbuf, pipe_name, smb_buf(inbuf), sizeof(pipe_name), -1, STR_TERMINATE);
56 /* If the name doesn't start \PIPE\ then this is directed */
57 /* at a mailslot or something we really, really don't understand, */
58 /* not just something we really don't understand. */
59 if ( strncmp(pipe_name,PIPE,PIPELEN) != 0 )
60 return(ERROR_DOS(ERRSRV,ERRaccess));
62 DEBUG(4,("Opening pipe %s.\n", pipe_name));
64 /* See if it is one we want to handle. */
65 for( i = 0; pipe_names[i].client_pipe ; i++ )
66 if( strequal(pipe_name,pipe_names[i].client_pipe) )
69 if (pipe_names[i].client_pipe == NULL)
70 return(ERROR_DOS(ERRSRV,ERRaccess));
72 /* Strip \PIPE\ off the name. */
73 pstrcpy(fname, pipe_name + PIPELEN);
78 * Hack for NT printers... JRA.
80 if(should_fail_next_srvsvc_open(fname))
81 return(ERROR(ERRSRV,ERRaccess));
84 /* Known pipes arrive with DIR attribs. Remove it so a regular file */
85 /* can be opened and add it in after the open. */
86 DEBUG(3,("Known pipe %s opening.\n",fname));
87 smb_ofun |= FILE_CREATE_IF_NOT_EXIST;
89 p = open_rpc_pipe_p(fname, conn, vuid);
90 if (!p) return(ERROR_DOS(ERRSRV,ERRnofids));
92 /* Prepare the reply */
93 set_message(outbuf,15,0,True);
95 /* Mark the opened file as an existing named pipe in message mode. */
96 SSVAL(outbuf,smb_vwv9,2);
97 SSVAL(outbuf,smb_vwv10,0xc700);
100 DEBUG(4,("Resetting open result to open from create.\n"));
104 SSVAL(outbuf,smb_vwv2, p->pnum);
105 SSVAL(outbuf,smb_vwv3,fmode);
106 put_dos_date3(outbuf,smb_vwv4,mtime);
107 SIVAL(outbuf,smb_vwv6,size);
108 SSVAL(outbuf,smb_vwv8,rmode);
109 SSVAL(outbuf,smb_vwv11,0x0001);
111 return chain_reply(inbuf,outbuf,length,bufsize);
114 /****************************************************************************
115 reply to a write on a pipe
116 ****************************************************************************/
117 int reply_pipe_write(char *inbuf,char *outbuf,int length,int dum_bufsize)
119 pipes_struct *p = get_rpc_pipe_p(inbuf,smb_vwv0);
120 size_t numtowrite = SVAL(inbuf,smb_vwv1);
126 return(ERROR_DOS(ERRDOS,ERRbadfid));
128 data = smb_buf(inbuf) + 3;
133 nwritten = write_to_pipe(p, data, numtowrite);
135 if ((nwritten == 0 && numtowrite != 0) || (nwritten < 0))
136 return (UNIXERROR(ERRDOS,ERRnoaccess));
138 outsize = set_message(outbuf,1,0,True);
140 SSVAL(outbuf,smb_vwv0,nwritten);
142 DEBUG(3,("write-IPC pnum=%04x nwritten=%d\n",
148 /****************************************************************************
149 Reply to a write and X.
151 This code is basically stolen from reply_write_and_X with some
152 wrinkles to handle pipes.
153 ****************************************************************************/
155 int reply_pipe_write_and_X(char *inbuf,char *outbuf,int length,int bufsize)
157 pipes_struct *p = get_rpc_pipe_p(inbuf,smb_vwv2);
158 size_t numtowrite = SVAL(inbuf,smb_vwv10);
160 int smb_doff = SVAL(inbuf, smb_vwv11);
161 BOOL pipe_start_message_raw = ((SVAL(inbuf, smb_vwv7) & (PIPE_START_MESSAGE|PIPE_RAW_MODE)) ==
162 (PIPE_START_MESSAGE|PIPE_RAW_MODE));
166 return(ERROR_DOS(ERRDOS,ERRbadfid));
168 data = smb_base(inbuf) + smb_doff;
173 if(pipe_start_message_raw) {
175 * For the start of a message in named pipe byte mode,
176 * the first two bytes are a length-of-pdu field. Ignore
177 * them (we don't trust the client. JRA.
180 DEBUG(0,("reply_pipe_write_and_X: start of message set and not enough data sent.(%u)\n",
181 (unsigned int)numtowrite ));
182 return (UNIXERROR(ERRDOS,ERRnoaccess));
188 nwritten = write_to_pipe(p, data, numtowrite);
191 if ((nwritten == 0 && numtowrite != 0) || (nwritten < 0))
192 return (UNIXERROR(ERRDOS,ERRnoaccess));
194 set_message(outbuf,6,0,True);
196 nwritten = (pipe_start_message_raw ? nwritten + 2 : nwritten);
197 SSVAL(outbuf,smb_vwv2,nwritten);
199 DEBUG(3,("writeX-IPC pnum=%04x nwritten=%d\n",
202 return chain_reply(inbuf,outbuf,length,bufsize);
205 /****************************************************************************
206 reply to a read and X
208 This code is basically stolen from reply_read_and_X with some
209 wrinkles to handle pipes.
210 ****************************************************************************/
211 int reply_pipe_read_and_X(char *inbuf,char *outbuf,int length,int bufsize)
213 pipes_struct *p = get_rpc_pipe_p(inbuf,smb_vwv2);
214 int smb_maxcnt = SVAL(inbuf,smb_vwv5);
215 int smb_mincnt = SVAL(inbuf,smb_vwv6);
218 /* we don't use the offset given to use for pipe reads. This
219 is deliberate, instead we always return the next lump of
222 uint32 smb_offs = IVAL(inbuf,smb_vwv3);
226 return(ERROR_DOS(ERRDOS,ERRbadfid));
228 set_message(outbuf,12,0,True);
229 data = smb_buf(outbuf);
231 nread = read_from_pipe(p, data, smb_maxcnt);
234 return(UNIXERROR(ERRDOS,ERRnoaccess));
236 SSVAL(outbuf,smb_vwv5,nread);
237 SSVAL(outbuf,smb_vwv6,smb_offset(data,outbuf));
238 SSVAL(smb_buf(outbuf),-2,nread);
240 DEBUG(3,("readX-IPC pnum=%04x min=%d max=%d nread=%d\n",
241 p->pnum, smb_mincnt, smb_maxcnt, nread));
243 return chain_reply(inbuf,outbuf,length,bufsize);
246 /****************************************************************************
248 ****************************************************************************/
249 int reply_pipe_close(connection_struct *conn, char *inbuf,char *outbuf)
251 pipes_struct *p = get_rpc_pipe_p(inbuf,smb_vwv0);
252 int outsize = set_message(outbuf,0,0,True);
255 return(ERROR_DOS(ERRDOS,ERRbadfid));
257 DEBUG(5,("reply_pipe_close: pnum:%x\n", p->pnum));
259 if (!close_rpc_pipe_hnd(p, conn))
260 return ERROR_DOS(ERRDOS,ERRbadfid);