3 Unix SMB/Netbios implementation.
5 Pipe SMB reply routines
6 Copyright (C) Andrew Tridgell 1992-1998
7 Copyright (C) Luke Kenneth Casson Leighton 1996-1998
8 Copyright (C) Paul Ashton 1997-1998.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25 This file handles reply_ calls on named pipes that the server
26 makes to handle specific protocols
32 #define PIPE "\\PIPE\\"
33 #define PIPELEN strlen(PIPE)
35 extern int DEBUGLEVEL;
37 extern struct pipe_id_info pipe_names[];
39 /****************************************************************************
40 reply to an open and X on a named pipe
42 This code is basically stolen from reply_open_and_X with some
43 wrinkles to handle pipes.
44 ****************************************************************************/
45 int reply_open_pipe_and_X(connection_struct *conn,
46 char *inbuf,char *outbuf,int length,int bufsize)
49 uint16 vuid = SVAL(inbuf, smb_uid);
51 int smb_ofun = SVAL(inbuf,smb_vwv8);
52 int size=0,fmode=0,mtime=0,rmode=0;
55 /* XXXX we need to handle passed times, sattr and flags */
56 pstrcpy(fname,smb_buf(inbuf));
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(fname,PIPE,PIPELEN) != 0 )
62 return(ERROR(ERRSRV,ERRaccess));
64 DEBUG(4,("Opening pipe %s.\n", fname));
66 /* See if it is one we want to handle. */
67 for( i = 0; pipe_names[i].client_pipe ; i++ )
68 if( strequal(fname,pipe_names[i].client_pipe) )
71 if (pipe_names[i].client_pipe == NULL)
72 return(ERROR(ERRSRV,ERRaccess));
74 /* Strip \PIPE\ off the name. */
75 pstrcpy(fname,smb_buf(inbuf) + PIPELEN);
79 * Hack for NT printers... JRA.
81 if(should_fail_next_srvsvc_open(fname))
82 return(ERROR(ERRSRV,ERRaccess));
85 /* Known pipes arrive with DIR attribs. Remove it so a regular file */
86 /* can be opened and add it in after the open. */
87 DEBUG(3,("Known pipe %s opening.\n",fname));
88 smb_ofun |= FILE_CREATE_IF_NOT_EXIST;
90 p = open_rpc_pipe_p(fname, conn, vuid);
91 if (!p) return(ERROR(ERRSRV,ERRnofids));
93 /* Prepare the reply */
94 set_message(outbuf,15,0,True);
96 /* Mark the opened file as an existing named pipe in message mode. */
97 SSVAL(outbuf,smb_vwv9,2);
98 SSVAL(outbuf,smb_vwv10,0xc700);
101 DEBUG(4,("Resetting open result to open from create.\n"));
105 SSVAL(outbuf,smb_vwv2, p->pnum);
106 SSVAL(outbuf,smb_vwv3,fmode);
107 put_dos_date3(outbuf,smb_vwv4,mtime);
108 SIVAL(outbuf,smb_vwv6,size);
109 SSVAL(outbuf,smb_vwv8,rmode);
110 SSVAL(outbuf,smb_vwv11,0x0001);
112 return chain_reply(inbuf,outbuf,length,bufsize);
115 /****************************************************************************
116 reply to a write on a pipe
117 ****************************************************************************/
118 int reply_pipe_write(char *inbuf,char *outbuf,int length,int dum_bufsize)
120 pipes_struct *p = get_rpc_pipe_p(inbuf,smb_vwv0);
121 size_t numtowrite = SVAL(inbuf,smb_vwv1);
127 return(ERROR(ERRDOS,ERRbadfid));
129 data = smb_buf(inbuf) + 3;
134 nwritten = write_to_pipe(p, data, numtowrite);
136 if ((nwritten == 0 && numtowrite != 0) || (nwritten < 0))
137 return (UNIXERROR(ERRDOS,ERRnoaccess));
139 outsize = set_message(outbuf,1,0,True);
141 SSVAL(outbuf,smb_vwv0,nwritten);
143 DEBUG(3,("write-IPC pnum=%04x nwritten=%d\n",
149 /****************************************************************************
150 Reply to a write and X.
152 This code is basically stolen from reply_write_and_X with some
153 wrinkles to handle pipes.
154 ****************************************************************************/
156 int reply_pipe_write_and_X(char *inbuf,char *outbuf,int length,int bufsize)
158 pipes_struct *p = get_rpc_pipe_p(inbuf,smb_vwv2);
159 size_t numtowrite = SVAL(inbuf,smb_vwv10);
161 int smb_doff = SVAL(inbuf, smb_vwv11);
162 BOOL pipe_start_message_raw = ((SVAL(inbuf, smb_vwv7) & (PIPE_START_MESSAGE|PIPE_RAW_MODE)) ==
163 (PIPE_START_MESSAGE|PIPE_RAW_MODE));
167 return(ERROR(ERRDOS,ERRbadfid));
169 data = smb_base(inbuf) + smb_doff;
174 if(pipe_start_message_raw) {
176 * For the start of a message in named pipe byte mode,
177 * the first two bytes are a length-of-pdu field. Ignore
178 * them (we don't trust the client. JRA.
181 DEBUG(0,("reply_pipe_write_and_X: start of message set and not enough data sent.(%u)\n",
182 (unsigned int)numtowrite ));
183 return (UNIXERROR(ERRDOS,ERRnoaccess));
189 nwritten = write_to_pipe(p, data, numtowrite);
192 if ((nwritten == 0 && numtowrite != 0) || (nwritten < 0))
193 return (UNIXERROR(ERRDOS,ERRnoaccess));
195 set_message(outbuf,6,0,True);
197 nwritten = (pipe_start_message_raw ? nwritten + 2 : nwritten);
198 SSVAL(outbuf,smb_vwv2,nwritten);
200 DEBUG(3,("writeX-IPC pnum=%04x nwritten=%d\n",
203 return chain_reply(inbuf,outbuf,length,bufsize);
206 /****************************************************************************
207 reply to a read and X
209 This code is basically stolen from reply_read_and_X with some
210 wrinkles to handle pipes.
211 ****************************************************************************/
212 int reply_pipe_read_and_X(char *inbuf,char *outbuf,int length,int bufsize)
214 pipes_struct *p = get_rpc_pipe_p(inbuf,smb_vwv2);
215 int smb_maxcnt = SVAL(inbuf,smb_vwv5);
216 int smb_mincnt = SVAL(inbuf,smb_vwv6);
219 /* we don't use the offset given to use for pipe reads. This
220 is deliberate, instead we always return the next lump of
223 uint32 smb_offs = IVAL(inbuf,smb_vwv3);
227 return(ERROR(ERRDOS,ERRbadfid));
229 set_message(outbuf,12,0,True);
230 data = smb_buf(outbuf);
232 nread = read_from_pipe(p, data, smb_maxcnt);
235 return(UNIXERROR(ERRDOS,ERRnoaccess));
237 SSVAL(outbuf,smb_vwv5,nread);
238 SSVAL(outbuf,smb_vwv6,smb_offset(data,outbuf));
239 SSVAL(smb_buf(outbuf),-2,nread);
241 DEBUG(3,("readX-IPC pnum=%04x min=%d max=%d nread=%d\n",
242 p->pnum, smb_mincnt, smb_maxcnt, nread));
244 return chain_reply(inbuf,outbuf,length,bufsize);
247 /****************************************************************************
249 ****************************************************************************/
250 int reply_pipe_close(connection_struct *conn, char *inbuf,char *outbuf)
252 pipes_struct *p = get_rpc_pipe_p(inbuf,smb_vwv0);
253 int outsize = set_message(outbuf,0,0,True);
256 return(ERROR(ERRDOS,ERRbadfid));
258 DEBUG(5,("reply_pipe_close: pnum:%x\n", p->pnum));
260 if (!close_rpc_pipe_hnd(p, conn))
261 return(ERROR(ERRDOS,ERRbadfid));