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/*
Unix SMB2 implementation.
Copyright (C) Stefan Metzmacher 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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "libcli/smb2/smb2.h"
#include "libcli/smb2/smb2_calls.h"
#include "smb_server/smb_server.h"
#include "smb_server/service_smb_proto.h"
#include "smb_server/smb2/smb2_server.h"
#include "ntvfs/ntvfs.h"
#include "param/param.h"
static void smb2srv_create_send(struct ntvfs_request *ntvfs)
{
struct smb2srv_request *req;
union smb_open *io;
SMB2SRV_CHECK_ASYNC_STATUS(io, union smb_open);
SMB2SRV_CHECK(smb2srv_setup_reply(req, 0x58, true, io->smb2.out.blob.length));
SCVAL(req->out.body, 0x02, io->smb2.out.oplock_level);
SCVAL(req->out.body, 0x03, io->smb2.out.reserved);
SIVAL(req->out.body, 0x04, io->smb2.out.create_action);
SBVAL(req->out.body, 0x08, io->smb2.out.create_time);
SBVAL(req->out.body, 0x10, io->smb2.out.access_time);
SBVAL(req->out.body, 0x18, io->smb2.out.write_time);
SBVAL(req->out.body, 0x20, io->smb2.out.change_time);
SBVAL(req->out.body, 0x28, io->smb2.out.alloc_size);
SBVAL(req->out.body, 0x30, io->smb2.out.size);
SIVAL(req->out.body, 0x38, io->smb2.out.file_attr);
SIVAL(req->out.body, 0x3C, io->smb2.out.reserved2);
smb2srv_push_handle(req->out.body, 0x40, io->smb2.out.file.ntvfs);
SMB2SRV_CHECK(smb2_push_o32s32_blob(&req->out, 0x50, io->smb2.out.blob));
/* also setup the chained file handle */
req->chained_file_handle = req->_chained_file_handle;
smb2srv_push_handle(req->chained_file_handle, 0, io->smb2.out.file.ntvfs);
smb2srv_send_reply(req);
}
void smb2srv_create_recv(struct smb2srv_request *req)
{
union smb_open *io;
DATA_BLOB blob;
SMB2SRV_CHECK_BODY_SIZE(req, 0x38, true);
SMB2SRV_TALLOC_IO_PTR(io, union smb_open);
SMB2SRV_SETUP_NTVFS_REQUEST(smb2srv_create_send, NTVFS_ASYNC_STATE_MAY_ASYNC);
io->smb2.level = RAW_OPEN_SMB2;
io->smb2.in.security_flags = CVAL(req->in.body, 0x02);
io->smb2.in.oplock_level = CVAL(req->in.body, 0x03);
io->smb2.in.impersonation_level = IVAL(req->in.body, 0x04);
io->smb2.in.create_flags = BVAL(req->in.body, 0x08);
io->smb2.in.reserved = BVAL(req->in.body, 0x10);
io->smb2.in.desired_access = IVAL(req->in.body, 0x18);
io->smb2.in.file_attributes = IVAL(req->in.body, 0x1C);
io->smb2.in.share_access = IVAL(req->in.body, 0x20);
io->smb2.in.create_disposition = IVAL(req->in.body, 0x24);
io->smb2.in.create_options = IVAL(req->in.body, 0x28);
SMB2SRV_CHECK(smb2_pull_o16s16_string(&req->in, io, req->in.body+0x2C, &io->smb2.in.fname));
SMB2SRV_CHECK(smb2_pull_o32s32_blob(&req->in, io, req->in.body+0x30, &blob));
/* TODO: parse the blob */
ZERO_STRUCT(io->smb2.in.eas);
ZERO_STRUCT(io->smb2.in.blobs);
/* the VFS backend does not yet handle NULL filenames */
if (io->smb2.in.fname == NULL) {
io->smb2.in.fname = "";
}
SMB2SRV_CALL_NTVFS_BACKEND(ntvfs_open(req->ntvfs, io));
}
static void smb2srv_close_send(struct ntvfs_request *ntvfs)
{
struct smb2srv_request *req;
union smb_close *io;
SMB2SRV_CHECK_ASYNC_STATUS(io, union smb_close);
SMB2SRV_CHECK(smb2srv_setup_reply(req, 0x3C, false, 0));
SSVAL(req->out.body, 0x02, io->smb2.out.flags);
SIVAL(req->out.body, 0x04, io->smb2.out._pad);
SBVAL(req->out.body, 0x08, io->smb2.out.create_time);
SBVAL(req->out.body, 0x10, io->smb2.out.access_time);
SBVAL(req->out.body, 0x18, io->smb2.out.write_time);
SBVAL(req->out.body, 0x20, io->smb2.out.change_time);
SBVAL(req->out.body, 0x28, io->smb2.out.alloc_size);
SBVAL(req->out.body, 0x30, io->smb2.out.size);
SIVAL(req->out.body, 0x38, io->smb2.out.file_attr);
smb2srv_send_reply(req);
}
void smb2srv_close_recv(struct smb2srv_request *req)
{
union smb_close *io;
SMB2SRV_CHECK_BODY_SIZE(req, 0x18, false);
SMB2SRV_TALLOC_IO_PTR(io, union smb_close);
SMB2SRV_SETUP_NTVFS_REQUEST(smb2srv_close_send, NTVFS_ASYNC_STATE_MAY_ASYNC);
io->smb2.level = RAW_CLOSE_SMB2;
io->smb2.in.flags = SVAL(req->in.body, 0x02);
io->smb2.in._pad = IVAL(req->in.body, 0x04);
io->smb2.in.file.ntvfs = smb2srv_pull_handle(req, req->in.body, 0x08);
SMB2SRV_CHECK_FILE_HANDLE(io->smb2.in.file.ntvfs);
SMB2SRV_CALL_NTVFS_BACKEND(ntvfs_close(req->ntvfs, io));
}
static void smb2srv_flush_send(struct ntvfs_request *ntvfs)
{
struct smb2srv_request *req;
union smb_flush *io;
SMB2SRV_CHECK_ASYNC_STATUS(io, union smb_flush);
SMB2SRV_CHECK(smb2srv_setup_reply(req, 0x04, false, 0));
SSVAL(req->out.body, 0x02, 0);
smb2srv_send_reply(req);
}
void smb2srv_flush_recv(struct smb2srv_request *req)
{
union smb_flush *io;
uint16_t _pad;
SMB2SRV_CHECK_BODY_SIZE(req, 0x18, false);
SMB2SRV_TALLOC_IO_PTR(io, union smb_flush);
SMB2SRV_SETUP_NTVFS_REQUEST(smb2srv_flush_send, NTVFS_ASYNC_STATE_MAY_ASYNC);
io->smb2.level = RAW_FLUSH_SMB2;
_pad = SVAL(req->in.body, 0x02);
io->smb2.in.unknown = IVAL(req->in.body, 0x04);
io->smb2.in.file.ntvfs = smb2srv_pull_handle(req, req->in.body, 0x08);
SMB2SRV_CHECK_FILE_HANDLE(io->smb2.in.file.ntvfs);
SMB2SRV_CALL_NTVFS_BACKEND(ntvfs_flush(req->ntvfs, io));
}
static void smb2srv_read_send(struct ntvfs_request *ntvfs)
{
struct smb2srv_request *req;
union smb_read *io;
SMB2SRV_CHECK_ASYNC_STATUS(io, union smb_read);
SMB2SRV_CHECK(smb2srv_setup_reply(req, 0x10, true, io->smb2.out.data.length));
/* TODO: avoid the memcpy */
SMB2SRV_CHECK(smb2_push_o16s32_blob(&req->out, 0x02, io->smb2.out.data));
SIVAL(req->out.body, 0x08, io->smb2.out.remaining);
SIVAL(req->out.body, 0x0C, io->smb2.out.reserved);
smb2srv_send_reply(req);
}
void smb2srv_read_recv(struct smb2srv_request *req)
{
union smb_read *io;
SMB2SRV_CHECK_BODY_SIZE(req, 0x30, true);
SMB2SRV_TALLOC_IO_PTR(io, union smb_read);
SMB2SRV_SETUP_NTVFS_REQUEST(smb2srv_read_send, NTVFS_ASYNC_STATE_MAY_ASYNC);
io->smb2.level = RAW_READ_SMB2;
io->smb2.in._pad = SVAL(req->in.body, 0x02);
io->smb2.in.length = IVAL(req->in.body, 0x04);
io->smb2.in.offset = BVAL(req->in.body, 0x08);
io->smb2.in.file.ntvfs = smb2srv_pull_handle(req, req->in.body, 0x10);
io->smb2.in.min_count = IVAL(req->in.body, 0x20);
io->smb2.in.channel = IVAL(req->in.body, 0x24);
io->smb2.in.remaining = IVAL(req->in.body, 0x28);
io->smb2.in.channel_offset = SVAL(req->in.body, 0x2C);
io->smb2.in.channel_length = SVAL(req->in.body, 0x2E);
SMB2SRV_CHECK_FILE_HANDLE(io->smb2.in.file.ntvfs);
/* preallocate the buffer for the backends */
io->smb2.out.data = data_blob_talloc(io, NULL, io->smb2.in.length);
if (io->smb2.out.data.length != io->smb2.in.length) {
SMB2SRV_CHECK(NT_STATUS_NO_MEMORY);
}
SMB2SRV_CALL_NTVFS_BACKEND(ntvfs_read(req->ntvfs, io));
}
static void smb2srv_write_send(struct ntvfs_request *ntvfs)
{
struct smb2srv_request *req;
union smb_write *io;
SMB2SRV_CHECK_ASYNC_STATUS(io, union smb_write);
SMB2SRV_CHECK(smb2srv_setup_reply(req, 0x10, true, 0));
SSVAL(req->out.body, 0x02, io->smb2.out._pad);
SIVAL(req->out.body, 0x04, io->smb2.out.nwritten);
SBVAL(req->out.body, 0x08, io->smb2.out.unknown1);
smb2srv_send_reply(req);
}
void smb2srv_write_recv(struct smb2srv_request *req)
{
union smb_write *io;
SMB2SRV_CHECK_BODY_SIZE(req, 0x30, true);
SMB2SRV_TALLOC_IO_PTR(io, union smb_write);
SMB2SRV_SETUP_NTVFS_REQUEST(smb2srv_write_send, NTVFS_ASYNC_STATE_MAY_ASYNC);
/* TODO: avoid the memcpy */
io->smb2.level = RAW_WRITE_SMB2;
SMB2SRV_CHECK(smb2_pull_o16s32_blob(&req->in, io, req->in.body+0x02, &io->smb2.in.data));
io->smb2.in.offset = BVAL(req->in.body, 0x08);
io->smb2.in.file.ntvfs = smb2srv_pull_handle(req, req->in.body, 0x10);
io->smb2.in.unknown1 = BVAL(req->in.body, 0x20);
io->smb2.in.unknown2 = BVAL(req->in.body, 0x28);
SMB2SRV_CHECK_FILE_HANDLE(io->smb2.in.file.ntvfs);
SMB2SRV_CALL_NTVFS_BACKEND(ntvfs_write(req->ntvfs, io));
}
static void smb2srv_lock_send(struct ntvfs_request *ntvfs)
{
struct smb2srv_request *req;
union smb_lock *io;
SMB2SRV_CHECK_ASYNC_STATUS_ERR(io, union smb_lock);
SMB2SRV_CHECK(smb2srv_setup_reply(req, 0x04, false, 0));
SSVAL(req->out.body, 0x02, io->smb2.out.unknown1);
smb2srv_send_reply(req);
}
void smb2srv_lock_recv(struct smb2srv_request *req)
{
union smb_lock *io;
SMB2SRV_CHECK_BODY_SIZE(req, 0x30, false);
SMB2SRV_TALLOC_IO_PTR(io, union smb_lock);
SMB2SRV_SETUP_NTVFS_REQUEST(smb2srv_lock_send, NTVFS_ASYNC_STATE_MAY_ASYNC);
io->smb2.level = RAW_LOCK_SMB2;
io->smb2.in.unknown1 = SVAL(req->in.body, 0x02);
io->smb2.in.unknown2 = IVAL(req->in.body, 0x04);
io->smb2.in.file.ntvfs = smb2srv_pull_handle(req, req->in.body, 0x08);
io->smb2.in.offset = BVAL(req->in.body, 0x18);
io->smb2.in.count = BVAL(req->in.body, 0x20);
io->smb2.in.unknown5 = IVAL(req->in.body, 0x24);
io->smb2.in.flags = IVAL(req->in.body, 0x28);
SMB2SRV_CHECK_FILE_HANDLE(io->smb2.in.file.ntvfs);
SMB2SRV_CALL_NTVFS_BACKEND(ntvfs_lock(req->ntvfs, io));
}
static void smb2srv_ioctl_send(struct ntvfs_request *ntvfs)
{
struct smb2srv_request *req;
union smb_ioctl *io;
SMB2SRV_CHECK_ASYNC_STATUS_ERR(io, union smb_ioctl);
SMB2SRV_CHECK(smb2srv_setup_reply(req, 0x30, true, 0));
SSVAL(req->out.body, 0x02, io->smb2.out._pad);
SIVAL(req->out.body, 0x04, io->smb2.out.function);
if (io->smb2.level == RAW_IOCTL_SMB2_NO_HANDLE) {
struct smb2_handle h;
h.data[0] = UINT64_MAX;
h.data[1] = UINT64_MAX;
smb2_push_handle(req->out.body + 0x08, &h);
} else {
smb2srv_push_handle(req->out.body, 0x08,io->smb2.in.file.ntvfs);
}
SMB2SRV_CHECK(smb2_push_o32s32_blob(&req->out, 0x18, io->smb2.out.in));
SMB2SRV_CHECK(smb2_push_o32s32_blob(&req->out, 0x20, io->smb2.out.out));
SIVAL(req->out.body, 0x28, io->smb2.out.unknown2);
SIVAL(req->out.body, 0x2C, io->smb2.out.unknown3);
smb2srv_send_reply(req);
}
void smb2srv_ioctl_recv(struct smb2srv_request *req)
{
union smb_ioctl *io;
struct smb2_handle h;
SMB2SRV_CHECK_BODY_SIZE(req, 0x38, true);
SMB2SRV_TALLOC_IO_PTR(io, union smb_ioctl);
SMB2SRV_SETUP_NTVFS_REQUEST(smb2srv_ioctl_send, NTVFS_ASYNC_STATE_MAY_ASYNC);
/* TODO: avoid the memcpy */
io->smb2.in._pad = SVAL(req->in.body, 0x02);
io->smb2.in.function = IVAL(req->in.body, 0x04);
/* file handle ... */
SMB2SRV_CHECK(smb2_pull_o32s32_blob(&req->in, io, req->in.body+0x18, &io->smb2.in.out));
io->smb2.in.unknown2 = IVAL(req->in.body, 0x20);
SMB2SRV_CHECK(smb2_pull_o32s32_blob(&req->in, io, req->in.body+0x24, &io->smb2.in.in));
io->smb2.in.max_response_size = IVAL(req->in.body, 0x2C);
io->smb2.in.flags = BVAL(req->in.body, 0x30);
smb2_pull_handle(req->in.body + 0x08, &h);
if (h.data[0] == UINT64_MAX && h.data[1] == UINT64_MAX) {
io->smb2.level = RAW_IOCTL_SMB2_NO_HANDLE;
} else {
io->smb2.level = RAW_IOCTL_SMB2;
io->smb2.in.file.ntvfs = smb2srv_pull_handle(req, req->in.body, 0x08);
SMB2SRV_CHECK_FILE_HANDLE(io->smb2.in.file.ntvfs);
}
SMB2SRV_CALL_NTVFS_BACKEND(ntvfs_ioctl(req->ntvfs, io));
}
static void smb2srv_notify_send(struct ntvfs_request *ntvfs)
{
struct smb2srv_request *req;
union smb_notify *io;
size_t size = 0;
int i;
uint8_t *p;
DATA_BLOB blob = data_blob(NULL, 0);
SMB2SRV_CHECK_ASYNC_STATUS(io, union smb_notify);
SMB2SRV_CHECK(smb2srv_setup_reply(req, 0x08, true, 0));
#define MAX_BYTES_PER_CHAR 3
/* work out how big the reply buffer could be */
for (i=0;i<io->smb2.out.num_changes;i++) {
size += 12 + 3 + (1+strlen(io->smb2.out.changes[i].name.s)) * MAX_BYTES_PER_CHAR;
}
blob = data_blob_talloc(req, NULL, size);
if (size > 0 && !blob.data) {
SMB2SRV_CHECK(NT_STATUS_NO_MEMORY);
}
p = blob.data;
/* construct the changes buffer */
for (i=0;i<io->smb2.out.num_changes;i++) {
uint32_t ofs;
ssize_t len;
SIVAL(p, 4, io->smb2.out.changes[i].action);
len = push_string(lp_iconv_convenience(ntvfs->ctx->lp_ctx), p + 12, io->smb2.out.changes[i].name.s,
blob.length - (p+12 - blob.data), STR_UNICODE);
SIVAL(p, 8, len);
ofs = len + 12;
if (ofs & 3) {
int pad = 4 - (ofs & 3);
memset(p+ofs, 0, pad);
ofs += pad;
}
if (i == io->smb2.out.num_changes-1) {
SIVAL(p, 0, 0);
} else {
SIVAL(p, 0, ofs);
}
p += ofs;
}
blob.length = p - blob.data;
SMB2SRV_CHECK(smb2_push_o16s32_blob(&req->out, 0x02, blob));
smb2srv_send_reply(req);
}
void smb2srv_notify_recv(struct smb2srv_request *req)
{
union smb_notify *io;
SMB2SRV_CHECK_BODY_SIZE(req, 0x20, false);
SMB2SRV_TALLOC_IO_PTR(io, union smb_notify);
SMB2SRV_SETUP_NTVFS_REQUEST(smb2srv_notify_send, NTVFS_ASYNC_STATE_MAY_ASYNC);
io->smb2.level = RAW_NOTIFY_SMB2;
io->smb2.in.recursive = SVAL(req->in.body, 0x02);
io->smb2.in.buffer_size = IVAL(req->in.body, 0x04);
io->smb2.in.file.ntvfs = smb2srv_pull_handle(req, req->in.body, 0x08);
io->smb2.in.completion_filter = IVAL(req->in.body, 0x18);
io->smb2.in.unknown = BVAL(req->in.body, 0x1C);
SMB2SRV_CHECK_FILE_HANDLE(io->smb2.in.file.ntvfs);
SMB2SRV_CALL_NTVFS_BACKEND(ntvfs_notify(req->ntvfs, io));
}
static void smb2srv_break_send(struct ntvfs_request *ntvfs)
{
struct smb2srv_request *req;
union smb_lock *io;
SMB2SRV_CHECK_ASYNC_STATUS_ERR(io, union smb_lock);
SMB2SRV_CHECK(smb2srv_setup_reply(req, 0x18, false, 0));
SCVAL(req->out.body, 0x02, io->smb2_break.out.oplock_level);
SCVAL(req->out.body, 0x03, io->smb2_break.out.reserved);
SIVAL(req->out.body, 0x04, io->smb2_break.out.reserved2);
smb2srv_push_handle(req->out.body, 0x08,io->smb2_break.out.file.ntvfs);
smb2srv_send_reply(req);
}
void smb2srv_break_recv(struct smb2srv_request *req)
{
union smb_lock *io;
SMB2SRV_CHECK_BODY_SIZE(req, 0x18, false);
SMB2SRV_TALLOC_IO_PTR(io, union smb_lock);
SMB2SRV_SETUP_NTVFS_REQUEST(smb2srv_break_send, NTVFS_ASYNC_STATE_MAY_ASYNC);
io->smb2_break.level = RAW_LOCK_SMB2_BREAK;
io->smb2_break.in.oplock_level = CVAL(req->in.body, 0x02);
io->smb2_break.in.reserved = CVAL(req->in.body, 0x03);
io->smb2_break.in.reserved2 = IVAL(req->in.body, 0x04);
io->smb2_break.in.file.ntvfs = smb2srv_pull_handle(req, req->in.body, 0x08);
SMB2SRV_CHECK_FILE_HANDLE(io->smb2_break.in.file.ntvfs);
SMB2SRV_CALL_NTVFS_BACKEND(ntvfs_lock(req->ntvfs, io));
}
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