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-rw-r--r--source4/libcli/raw/rawreadwrite.c321
1 files changed, 321 insertions, 0 deletions
diff --git a/source4/libcli/raw/rawreadwrite.c b/source4/libcli/raw/rawreadwrite.c
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index 0000000000..84c7e3c00f
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+++ b/source4/libcli/raw/rawreadwrite.c
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+/*
+ 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);
+}