first public release of samba4 code

(This used to be commit b0510b5428b3461aeb9bbe3cc95f62fc73e2b97f)

1 files changed, 321 insertions, 0 deletions

diff --git a/source4/libcli/raw/rawreadwrite.c b/source4/libcli/raw/rawreadwrite.c
new file mode 100644
index 0000000000..84c7e3c00f
--- /dev/null
+++ b/source4/libcli/raw/rawreadwrite.c
@@ -0,0 +1,321 @@
+/* 
+   Unix SMB/CIFS implementation.
+   client file read/write routines
+   Copyright (C) Andrew Tridgell 1994-1998
+   Copyright (C) James Myers 2003
+   
+   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.
+*/
+
+#include "includes.h"
+
+#define SETUP_REQUEST(cmd, wct, buflen) do { \
+	req = cli_request_setup(tree, cmd, wct, buflen); \
+	if (!req) return NULL; \
+} while (0)
+
+
+/****************************************************************************
+ low level read operation (async send)
+****************************************************************************/
+struct cli_request *smb_raw_read_send(struct cli_tree *tree, union smb_read *parms)
+{
+	BOOL bigoffset = False;
+	struct cli_request *req; 
+
+	switch (parms->generic.level) {
+	case RAW_READ_GENERIC:
+		return NULL;
+		
+	case RAW_READ_READBRAW:
+		if (parms->readbraw.in.offset >= 0x80000000) {
+			bigoffset = True;
+		}
+		SETUP_REQUEST(SMBreadbraw, bigoffset? 10:8, 0);
+		SSVAL(req->out.vwv, VWV(0), parms->readbraw.in.fnum);
+		SIVAL(req->out.vwv, VWV(1), parms->readbraw.in.offset);
+		SSVAL(req->out.vwv, VWV(3), parms->readbraw.in.maxcnt);
+		SSVAL(req->out.vwv, VWV(4), parms->readbraw.in.mincnt);
+		SIVAL(req->out.vwv, VWV(5), parms->readbraw.in.timeout);
+		SSVAL(req->out.vwv, VWV(7), 0); /* reserved */
+		if (bigoffset) {
+			SIVAL(req->out.vwv, VWV(8),parms->readbraw.in.offset>>32);
+		}
+		break;
+
+	case RAW_READ_LOCKREAD:
+		SETUP_REQUEST(SMBlockread, 5, 0);
+		SSVAL(req->out.vwv, VWV(0), parms->lockread.in.fnum);
+		SSVAL(req->out.vwv, VWV(1), parms->lockread.in.count);
+		SIVAL(req->out.vwv, VWV(2), parms->lockread.in.offset);
+		SSVAL(req->out.vwv, VWV(4), parms->lockread.in.remaining);
+		break;
+
+	case RAW_READ_READ:
+		SETUP_REQUEST(SMBread, 5, 0);
+		SSVAL(req->out.vwv, VWV(0), parms->read.in.fnum);
+		SSVAL(req->out.vwv, VWV(1), parms->read.in.count);
+		SIVAL(req->out.vwv, VWV(2), parms->read.in.offset);
+		SSVAL(req->out.vwv, VWV(4), parms->read.in.remaining);
+		break;
+
+	case RAW_READ_READX:
+		if (parms->readx.in.offset >= 0x80000000) {
+			bigoffset = True;
+		}
+		SETUP_REQUEST(SMBreadX, bigoffset ? 12 : 10, 0);
+		SSVAL(req->out.vwv, VWV(0), 0xFF);
+		SSVAL(req->out.vwv, VWV(1), 0);
+		SSVAL(req->out.vwv, VWV(2), parms->readx.in.fnum);
+		SIVAL(req->out.vwv, VWV(3), parms->readx.in.offset);
+		SSVAL(req->out.vwv, VWV(5), parms->readx.in.maxcnt);
+		SSVAL(req->out.vwv, VWV(6), parms->readx.in.mincnt);
+		SIVAL(req->out.vwv, VWV(7), 0); /* reserved */
+		SSVAL(req->out.vwv, VWV(9), parms->readx.in.remaining);
+		if (bigoffset) {
+			SIVAL(req->out.vwv, VWV(10),parms->readx.in.offset>>32);
+		}
+		break;
+	}
+
+	if (!cli_request_send(req)) {
+		cli_request_destroy(req);
+		return NULL;
+	}
+
+	/* the transport layer needs to know that a readbraw is pending
+	   and handle receives a little differently */
+	if (parms->generic.level == RAW_READ_READBRAW) {
+		tree->session->transport->readbraw_pending = 1;
+	}
+
+	return req;
+}
+
+/****************************************************************************
+ low level read operation (async recv)
+****************************************************************************/
+NTSTATUS smb_raw_read_recv(struct cli_request *req, union smb_read *parms)
+{
+	if (!cli_request_receive(req) ||
+	    cli_request_is_error(req)) {
+		goto failed;
+	}
+
+	switch (parms->generic.level) {
+	case RAW_READ_GENERIC:
+		/* handled in _send() */
+		break;
+
+	case RAW_READ_READBRAW:
+		parms->readbraw.out.nread = req->in.size - NBT_HDR_SIZE;
+		if (parms->readbraw.out.nread > 
+		    MAX(parms->readx.in.mincnt, parms->readx.in.maxcnt)) {
+			req->status = NT_STATUS_BUFFER_TOO_SMALL;
+			goto failed;
+		}
+		memcpy(parms->readbraw.out.data, req->in.buffer + NBT_HDR_SIZE, parms->readbraw.out.nread);
+		break;
+		
+	case RAW_READ_LOCKREAD:
+		CLI_CHECK_WCT(req, 5);
+		parms->lockread.out.nread = SVAL(req->in.vwv, VWV(0));
+		if (parms->lockread.out.nread > parms->lockread.in.count ||
+		    !cli_raw_pull_data(req, req->in.data+3, 
+				       parms->lockread.out.nread, parms->lockread.out.data)) {
+			req->status = NT_STATUS_BUFFER_TOO_SMALL;
+		}
+		break;
+
+	case RAW_READ_READ:
+		/* there are 4 reserved words in the reply */
+		CLI_CHECK_WCT(req, 5);
+		parms->read.out.nread = SVAL(req->in.vwv, VWV(0));
+		if (parms->read.out.nread > parms->read.in.count ||
+		    !cli_raw_pull_data(req, req->in.data+3, 
+				       parms->read.out.nread, parms->read.out.data)) {
+			req->status = NT_STATUS_BUFFER_TOO_SMALL;
+		}
+		break;
+
+	case RAW_READ_READX:
+		/* there are 5 reserved words in the reply */
+		CLI_CHECK_WCT(req, 12);
+		parms->readx.out.remaining       = SVAL(req->in.vwv, VWV(2));
+		parms->readx.out.compaction_mode = SVAL(req->in.vwv, VWV(3));
+		parms->readx.out.nread = SVAL(req->in.vwv, VWV(5));
+		if (parms->readx.out.nread > MAX(parms->readx.in.mincnt, parms->readx.in.maxcnt) ||
+		    !cli_raw_pull_data(req, req->in.hdr + SVAL(req->in.vwv, VWV(6)), 
+				       parms->readx.out.nread, 
+				       parms->readx.out.data)) {
+			req->status = NT_STATUS_BUFFER_TOO_SMALL;
+		}
+		break;
+	}
+
+failed:
+	return cli_request_destroy(req);
+}
+
+/****************************************************************************
+ low level read operation (sync interface)
+****************************************************************************/
+NTSTATUS smb_raw_read(struct cli_tree *tree, union smb_read *parms)
+{
+	struct cli_request *req = smb_raw_read_send(tree, parms);
+	return smb_raw_read_recv(req, parms);
+}
+
+
+/****************************************************************************
+ raw write interface (async send)
+****************************************************************************/
+struct cli_request *smb_raw_write_send(struct cli_tree *tree, union smb_write *parms)
+{
+	BOOL bigoffset = False;
+	struct cli_request *req; 
+
+	switch (parms->generic.level) {
+	case RAW_WRITE_GENERIC:
+		return NULL;
+		
+	case RAW_WRITE_WRITEUNLOCK:
+		SETUP_REQUEST(SMBwriteunlock, 5, 3 + parms->writeunlock.in.count);
+		SSVAL(req->out.vwv, VWV(0), parms->writeunlock.in.fnum);
+		SSVAL(req->out.vwv, VWV(1), parms->writeunlock.in.count);
+		SIVAL(req->out.vwv, VWV(2), parms->writeunlock.in.offset);
+		SSVAL(req->out.vwv, VWV(4), parms->writeunlock.in.remaining);
+		SCVAL(req->out.data, 0, SMB_DATA_BLOCK);
+		SSVAL(req->out.data, 1, parms->writeunlock.in.count);
+		if (parms->writeunlock.in.count > 0) {
+			memcpy(req->out.data+3, parms->writeunlock.in.data, 
+			       parms->writeunlock.in.count);
+		}
+		break;
+
+	case RAW_WRITE_WRITE:
+		SETUP_REQUEST(SMBwrite, 5,  3 + parms->write.in.count);
+		SSVAL(req->out.vwv, VWV(0), parms->write.in.fnum);
+		SSVAL(req->out.vwv, VWV(1), parms->write.in.count);
+		SIVAL(req->out.vwv, VWV(2), parms->write.in.offset);
+		SSVAL(req->out.vwv, VWV(4), parms->write.in.remaining);
+		SCVAL(req->out.data, 0, SMB_DATA_BLOCK);
+		SSVAL(req->out.data, 1, parms->write.in.count);
+		if (parms->write.in.count > 0) {
+			memcpy(req->out.data+3, parms->write.in.data, parms->write.in.count);
+		}
+		break;
+
+	case RAW_WRITE_WRITECLOSE:
+		SETUP_REQUEST(SMBwriteclose, 6, 1 + parms->writeclose.in.count);
+		SSVAL(req->out.vwv, VWV(0), parms->writeclose.in.fnum);
+		SSVAL(req->out.vwv, VWV(1), parms->writeclose.in.count);
+		SIVAL(req->out.vwv, VWV(2), parms->writeclose.in.offset);
+		put_dos_date3(req->out.vwv, VWV(4), parms->writeclose.in.mtime);
+		SCVAL(req->out.data, 0, 0);
+		if (parms->writeclose.in.count > 0) {
+			memcpy(req->out.data+1, parms->writeclose.in.data, 
+			       parms->writeclose.in.count);
+		}
+		break;
+
+	case RAW_WRITE_WRITEX:
+		if (parms->writex.in.offset >= 0x80000000) {
+			bigoffset = True;
+		}
+		SETUP_REQUEST(SMBwriteX, bigoffset ? 14 : 12, parms->writex.in.count);
+		SSVAL(req->out.vwv, VWV(0), 0xFF);
+		SSVAL(req->out.vwv, VWV(1), 0);
+		SSVAL(req->out.vwv, VWV(2), parms->writex.in.fnum);
+		SIVAL(req->out.vwv, VWV(3), parms->writex.in.offset);
+		SIVAL(req->out.vwv, VWV(5), 0); /* reserved */
+		SSVAL(req->out.vwv, VWV(7), parms->writex.in.wmode);
+		SSVAL(req->out.vwv, VWV(8), parms->writex.in.remaining);
+		SSVAL(req->out.vwv, VWV(9), 0); /* reserved */
+		SSVAL(req->out.vwv, VWV(10), parms->writex.in.count);
+		SSVAL(req->out.vwv, VWV(11), PTR_DIFF(req->out.data, req->out.hdr));
+		if (bigoffset) {
+	      		SIVAL(req->out.vwv,VWV(12),parms->writex.in.offset>>32);
+		}
+	      	if (parms->writex.in.count > 0) {
+			memcpy(req->out.data, parms->writex.in.data, parms->writex.in.count);
+		}
+		break;
+
+	case RAW_WRITE_SPLWRITE:
+		SETUP_REQUEST(SMBsplwr, 1, parms->splwrite.in.count);
+		SSVAL(req->out.vwv, VWV(0), parms->splwrite.in.fnum);
+		if (parms->splwrite.in.count > 0) {
+			memcpy(req->out.data, parms->splwrite.in.data, parms->splwrite.in.count);
+		}
+		break;
+	}
+
+	if (!cli_request_send(req)) {
+cli_request_destroy(req);
+		return NULL;
+	}
+
+	return req;
+}
+
+
+/****************************************************************************
+ raw write interface (async recv)
+****************************************************************************/
+NTSTATUS smb_raw_write_recv(struct cli_request *req, union smb_write *parms)
+{
+	if (!cli_request_receive(req) ||
+	    cli_request_is_error(req)) {
+		goto failed;
+	}
+
+	switch (parms->generic.level) {
+	case RAW_WRITE_GENERIC:
+		break;
+	case RAW_WRITE_WRITEUNLOCK:
+		CLI_CHECK_WCT(req, 1);		
+		parms->writeunlock.out.nwritten = SVAL(req->in.vwv, VWV(0));
+		break;
+	case RAW_WRITE_WRITE:
+		CLI_CHECK_WCT(req, 1);
+		parms->write.out.nwritten = SVAL(req->in.vwv, VWV(0));
+		break;
+	case RAW_WRITE_WRITECLOSE:
+		CLI_CHECK_WCT(req, 1);
+		parms->writeclose.out.nwritten = SVAL(req->in.vwv, VWV(0));
+		break;
+	case RAW_WRITE_WRITEX:
+		CLI_CHECK_WCT(req, 6);
+		parms->writex.out.nwritten  = SVAL(req->in.vwv, VWV(2));
+		parms->writex.out.nwritten += (CVAL(req->in.vwv, VWV(4)) << 16);
+		parms->writex.out.remaining = SVAL(req->in.vwv, VWV(3));
+		break;
+	case RAW_WRITE_SPLWRITE:
+		break;
+	}
+
+failed:
+	return cli_request_destroy(req);
+}
+
+/****************************************************************************
+ raw write interface (sync interface)
+****************************************************************************/
+NTSTATUS smb_raw_write(struct cli_tree *tree, union smb_write *parms)
+{
+	struct cli_request *req = smb_raw_write_send(tree, parms);
+	return smb_raw_write_recv(req, parms);
+}