--- /dev/null
+/*
+ Unix SMB/CIFS implementation.
+ Pipe SMB reply routines
+ Copyright (C) Andrew Tridgell 1992-1998
+ Copyright (C) Luke Kenneth Casson Leighton 1996-1998
+ Copyright (C) Paul Ashton 1997-1998.
+ Copyright (C) Jeremy Allison 2005.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+/*
+ This file handles reply_ calls on named pipes that the server
+ makes to handle specific protocols
+*/
+
+
+#include "includes.h"
+
+#define PIPE "\\PIPE\\"
+#define PIPELEN strlen(PIPE)
+
+extern struct pipe_id_info pipe_names[];
+
+/****************************************************************************
+ Reply to an open and X on a named pipe.
+ This code is basically stolen from reply_open_and_X with some
+ wrinkles to handle pipes.
+****************************************************************************/
+
+int reply_open_pipe_and_X(connection_struct *conn,
+ char *inbuf,char *outbuf,int length,int bufsize)
+{
+ pstring fname;
+ pstring pipe_name;
+ uint16 vuid = SVAL(inbuf, smb_uid);
+ smb_np_struct *p;
+ int size=0,fmode=0,mtime=0,rmode=0;
+ int i;
+
+ /* XXXX we need to handle passed times, sattr and flags */
+ srvstr_pull_buf(inbuf, pipe_name, smb_buf(inbuf), sizeof(pipe_name), STR_TERMINATE);
+
+ /* If the name doesn't start \PIPE\ then this is directed */
+ /* at a mailslot or something we really, really don't understand, */
+ /* not just something we really don't understand. */
+ if ( strncmp(pipe_name,PIPE,PIPELEN) != 0 ) {
+ return(ERROR_DOS(ERRSRV,ERRaccess));
+ }
+
+ DEBUG(4,("Opening pipe %s.\n", pipe_name));
+
+ /* See if it is one we want to handle. */
+ for( i = 0; pipe_names[i].client_pipe ; i++ ) {
+ if( strequal(pipe_name,pipe_names[i].client_pipe)) {
+ break;
+ }
+ }
+
+ if (pipe_names[i].client_pipe == NULL) {
+ return(ERROR_BOTH(NT_STATUS_OBJECT_NAME_NOT_FOUND,ERRDOS,ERRbadpipe));
+ }
+
+ /* Strip \PIPE\ off the name. */
+ pstrcpy(fname, pipe_name + PIPELEN);
+
+#if 0
+ /*
+ * Hack for NT printers... JRA.
+ */
+ if(should_fail_next_srvsvc_open(fname))
+ return(ERROR(ERRSRV,ERRaccess));
+#endif
+
+ /* Known pipes arrive with DIR attribs. Remove it so a regular file */
+ /* can be opened and add it in after the open. */
+ DEBUG(3,("Known pipe %s opening.\n",fname));
+
+ p = open_rpc_pipe_p(fname, conn, vuid);
+ if (!p) {
+ return(ERROR_DOS(ERRSRV,ERRnofids));
+ }
+
+ /* Prepare the reply */
+ set_message(outbuf,15,0,True);
+
+ /* Mark the opened file as an existing named pipe in message mode. */
+ SSVAL(outbuf,smb_vwv9,2);
+ SSVAL(outbuf,smb_vwv10,0xc700);
+
+ if (rmode == 2) {
+ DEBUG(4,("Resetting open result to open from create.\n"));
+ rmode = 1;
+ }
+
+ SSVAL(outbuf,smb_vwv2, p->pnum);
+ SSVAL(outbuf,smb_vwv3,fmode);
+ srv_put_dos_date3(outbuf,smb_vwv4,mtime);
+ SIVAL(outbuf,smb_vwv6,size);
+ SSVAL(outbuf,smb_vwv8,rmode);
+ SSVAL(outbuf,smb_vwv11,0x0001);
+
+ return chain_reply(inbuf,outbuf,length,bufsize);
+}
+
+/****************************************************************************
+ Reply to a write on a pipe.
+****************************************************************************/
+
+int reply_pipe_write(char *inbuf,char *outbuf,int length,int dum_bufsize)
+{
+ smb_np_struct *p = get_rpc_pipe_p(inbuf,smb_vwv0);
+ size_t numtowrite = SVAL(inbuf,smb_vwv1);
+ int nwritten;
+ int outsize;
+ char *data;
+
+ if (!p) {
+ return(ERROR_DOS(ERRDOS,ERRbadfid));
+ }
+
+ data = smb_buf(inbuf) + 3;
+
+ if (numtowrite == 0) {
+ nwritten = 0;
+ } else {
+ nwritten = write_to_pipe(p, data, numtowrite);
+ }
+
+ if ((nwritten == 0 && numtowrite != 0) || (nwritten < 0)) {
+ return (UNIXERROR(ERRDOS,ERRnoaccess));
+ }
+
+ outsize = set_message(outbuf,1,0,True);
+
+ SSVAL(outbuf,smb_vwv0,nwritten);
+
+ DEBUG(3,("write-IPC pnum=%04x nwritten=%d\n", p->pnum, nwritten));
+
+ return(outsize);
+}
+
+/****************************************************************************
+ Reply to a write and X.
+
+ This code is basically stolen from reply_write_and_X with some
+ wrinkles to handle pipes.
+****************************************************************************/
+
+int reply_pipe_write_and_X(char *inbuf,char *outbuf,int length,int bufsize)
+{
+ smb_np_struct *p = get_rpc_pipe_p(inbuf,smb_vwv2);
+ size_t numtowrite = SVAL(inbuf,smb_vwv10);
+ int nwritten = -1;
+ int smb_doff = SVAL(inbuf, smb_vwv11);
+ BOOL pipe_start_message_raw = ((SVAL(inbuf, smb_vwv7) & (PIPE_START_MESSAGE|PIPE_RAW_MODE)) ==
+ (PIPE_START_MESSAGE|PIPE_RAW_MODE));
+ char *data;
+
+ if (!p) {
+ return(ERROR_DOS(ERRDOS,ERRbadfid));
+ }
+
+ data = smb_base(inbuf) + smb_doff;
+
+ if (numtowrite == 0) {
+ nwritten = 0;
+ } else {
+ if(pipe_start_message_raw) {
+ /*
+ * For the start of a message in named pipe byte mode,
+ * the first two bytes are a length-of-pdu field. Ignore
+ * them (we don't trust the client). JRA.
+ */
+ if(numtowrite < 2) {
+ DEBUG(0,("reply_pipe_write_and_X: start of message set and not enough data sent.(%u)\n",
+ (unsigned int)numtowrite ));
+ return (UNIXERROR(ERRDOS,ERRnoaccess));
+ }
+
+ data += 2;
+ numtowrite -= 2;
+ }
+ nwritten = write_to_pipe(p, data, numtowrite);
+ }
+
+ if ((nwritten == 0 && numtowrite != 0) || (nwritten < 0)) {
+ return (UNIXERROR(ERRDOS,ERRnoaccess));
+ }
+
+ set_message(outbuf,6,0,True);
+
+ nwritten = (pipe_start_message_raw ? nwritten + 2 : nwritten);
+ SSVAL(outbuf,smb_vwv2,nwritten);
+
+ DEBUG(3,("writeX-IPC pnum=%04x nwritten=%d\n", p->pnum, nwritten));
+
+ return chain_reply(inbuf,outbuf,length,bufsize);
+}
+
+/****************************************************************************
+ Reply to a read and X.
+ This code is basically stolen from reply_read_and_X with some
+ wrinkles to handle pipes.
+****************************************************************************/
+
+int reply_pipe_read_and_X(char *inbuf,char *outbuf,int length,int bufsize)
+{
+ smb_np_struct *p = get_rpc_pipe_p(inbuf,smb_vwv2);
+ int smb_maxcnt = SVAL(inbuf,smb_vwv5);
+ int smb_mincnt = SVAL(inbuf,smb_vwv6);
+ int nread = -1;
+ char *data;
+ BOOL unused;
+
+ /* we don't use the offset given to use for pipe reads. This
+ is deliberate, instead we always return the next lump of
+ data on the pipe */
+#if 0
+ uint32 smb_offs = IVAL(inbuf,smb_vwv3);
+#endif
+
+ if (!p) {
+ return(ERROR_DOS(ERRDOS,ERRbadfid));
+ }
+
+ set_message(outbuf,12,0,True);
+ data = smb_buf(outbuf);
+
+ nread = read_from_pipe(p, data, smb_maxcnt, &unused);
+
+ if (nread < 0) {
+ return(UNIXERROR(ERRDOS,ERRnoaccess));
+ }
+
+ SSVAL(outbuf,smb_vwv5,nread);
+ SSVAL(outbuf,smb_vwv6,smb_offset(data,outbuf));
+ SSVAL(smb_buf(outbuf),-2,nread);
+
+ DEBUG(3,("readX-IPC pnum=%04x min=%d max=%d nread=%d\n",
+ p->pnum, smb_mincnt, smb_maxcnt, nread));
+
+ /* Ensure we set up the message length to include the data length read. */
+ set_message_bcc(outbuf,nread);
+ return chain_reply(inbuf,outbuf,length,bufsize);
+}
+
+/****************************************************************************
+ Reply to a close.
+****************************************************************************/
+
+int reply_pipe_close(connection_struct *conn, char *inbuf,char *outbuf)
+{
+ smb_np_struct *p = get_rpc_pipe_p(inbuf,smb_vwv0);
+ int outsize = set_message(outbuf,0,0,True);
+
+ if (!p) {
+ return(ERROR_DOS(ERRDOS,ERRbadfid));
+ }
+
+ DEBUG(5,("reply_pipe_close: pnum:%x\n", p->pnum));
+
+ if (!close_rpc_pipe_hnd(p)) {
+ return ERROR_DOS(ERRDOS,ERRbadfid);
+ }
+
+ return(outsize);
+}
projects / samba / blobdiff