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/*
Unix SMB/CIFS implementation.
Core SMB2 server
Copyright (C) Stefan Metzmacher 2009
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 "smbd/globals.h"
#include "../source4/libcli/smb2/smb2_constants.h"
static NTSTATUS smbd_smb2_create(struct smbd_smb2_request *req,
uint8_t in_oplock_level,
uint32_t in_impersonation_level,
uint32_t in_desired_access,
uint32_t in_file_attributes,
uint32_t in_share_access,
uint32_t in_create_disposition,
uint32_t in_create_options,
const char *in_name,
uint8_t *out_oplock_level,
uint32_t *out_create_action,
NTTIME *out_creation_time,
NTTIME *out_last_access_time,
NTTIME *out_last_write_time,
NTTIME *out_change_time,
uint64_t *out_allocation_size,
uint64_t *out_end_of_file,
uint32_t *out_file_attributes,
uint64_t *out_file_id_volatile);
NTSTATUS smbd_smb2_request_process_create(struct smbd_smb2_request *req)
{
const uint8_t *inbody;
int i = req->current_idx;
uint8_t *outhdr;
DATA_BLOB outbody;
DATA_BLOB outdyn;
size_t expected_body_size = 0x39;
size_t body_size;
uint8_t in_oplock_level;
uint32_t in_impersonation_level;
uint32_t in_desired_access;
uint32_t in_file_attributes;
uint32_t in_share_access;
uint32_t in_create_disposition;
uint32_t in_create_options;
uint16_t in_name_offset;
uint16_t in_name_length;
DATA_BLOB in_name_buffer;
char *in_name_string;
size_t in_name_string_size;
uint8_t out_oplock_level;
uint32_t out_create_action;
NTTIME out_creation_time;
NTTIME out_last_access_time;
NTTIME out_last_write_time;
NTTIME out_change_time;
uint64_t out_allocation_size;
uint64_t out_end_of_file;
uint32_t out_file_attributes;
uint64_t out_file_id_volatile;
NTSTATUS status;
bool ok;
if (req->in.vector[i+1].iov_len != (expected_body_size & 0xFFFFFFFE)) {
return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
}
inbody = (const uint8_t *)req->in.vector[i+1].iov_base;
body_size = SVAL(inbody, 0x00);
if (body_size != expected_body_size) {
return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
}
in_oplock_level = CVAL(inbody, 0x03);
in_impersonation_level = IVAL(inbody, 0x04);
in_desired_access = IVAL(inbody, 0x18);
in_file_attributes = IVAL(inbody, 0x1C);
in_share_access = IVAL(inbody, 0x20);
in_create_disposition = IVAL(inbody, 0x24);
in_create_options = IVAL(inbody, 0x28);
in_name_offset = SVAL(inbody, 0x2C);
in_name_length = SVAL(inbody, 0x2E);
if (in_name_offset != (SMB2_HDR_BODY + (body_size & 0xFFFFFFFE))) {
return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
}
if (in_name_length > req->in.vector[i+2].iov_len) {
return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
}
in_name_buffer.data = (uint8_t *)req->in.vector[i+2].iov_base;
in_name_buffer.length = in_name_length;
ok = convert_string_talloc(req, CH_UTF16, CH_UNIX,
in_name_buffer.data,
in_name_buffer.length,
&in_name_string,
&in_name_string_size, false);
if (!ok) {
return smbd_smb2_request_error(req, NT_STATUS_ILLEGAL_CHARACTER);
}
status = smbd_smb2_create(req,
in_oplock_level,
in_impersonation_level,
in_desired_access,
in_file_attributes,
in_share_access,
in_create_disposition,
in_create_options,
in_name_string,
&out_oplock_level,
&out_create_action,
&out_creation_time,
&out_last_access_time,
&out_last_write_time,
&out_change_time,
&out_allocation_size,
&out_end_of_file,
&out_file_attributes,
&out_file_id_volatile);
if (!NT_STATUS_IS_OK(status)) {
return smbd_smb2_request_error(req, status);
}
outhdr = (uint8_t *)req->out.vector[i].iov_base;
outbody = data_blob_talloc(req->out.vector, NULL, 0x58);
if (outbody.data == NULL) {
return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
}
SSVAL(outbody.data, 0x00, 0x58 + 1); /* struct size */
SCVAL(outbody.data, 0x02,
out_oplock_level); /* oplock level */
SCVAL(outbody.data, 0x03, 0); /* reserved */
SIVAL(outbody.data, 0x04,
out_create_action); /* create action */
SBVAL(outbody.data, 0x08,
out_creation_time); /* creation time */
SBVAL(outbody.data, 0x10,
out_last_access_time); /* last access time */
SBVAL(outbody.data, 0x18,
out_last_write_time); /* last write time */
SBVAL(outbody.data, 0x20,
out_change_time); /* change time */
SBVAL(outbody.data, 0x28,
out_allocation_size); /* allocation size */
SBVAL(outbody.data, 0x30,
out_end_of_file); /* end of file */
SIVAL(outbody.data, 0x38,
out_file_attributes); /* file attributes */
SIVAL(outbody.data, 0x3C, 0); /* reserved */
SBVAL(outbody.data, 0x40, 0); /* file id (persistent) */
SBVAL(outbody.data, 0x48,
out_file_id_volatile); /* file id (volatile) */
SIVAL(outbody.data, 0x50, 0); /* create contexts offset */
SIVAL(outbody.data, 0x54, 0); /* create contexts length */
outdyn = data_blob_const(NULL, 0);
return smbd_smb2_request_done(req, outbody, &outdyn);
}
static NTSTATUS smbd_smb2_create(struct smbd_smb2_request *req,
uint8_t in_oplock_level,
uint32_t in_impersonation_level,
uint32_t in_desired_access,
uint32_t in_file_attributes,
uint32_t in_share_access,
uint32_t in_create_disposition,
uint32_t in_create_options,
const char *in_name,
uint8_t *out_oplock_level,
uint32_t *out_create_action,
NTTIME *out_creation_time,
NTTIME *out_last_access_time,
NTTIME *out_last_write_time,
NTTIME *out_change_time,
uint64_t *out_allocation_size,
uint64_t *out_end_of_file,
uint32_t *out_file_attributes,
uint64_t *out_file_id_volatile)
{
NTSTATUS status;
struct smb_request *smbreq;
files_struct *result;
int info;
SMB_STRUCT_STAT sbuf;
DEBUG(10,("smbd_smb2_create: name[%s]\n",
in_name));
smbreq = smbd_smb2_fake_smb_request(req);
if (smbreq == NULL) {
return NT_STATUS_NO_MEMORY;
}
if (IS_IPC(smbreq->conn)) {
return NT_STATUS_NOT_IMPLEMENTED;
} else if (CAN_PRINT(smbreq->conn)) {
status = file_new(smbreq, smbreq->conn, &result);
if(!NT_STATUS_IS_OK(status)) {
return status;
}
status = print_fsp_open(smbreq,
smbreq->conn,
in_name,
smbreq->vuid,
result,
&sbuf);
if (!NT_STATUS_IS_OK(status)) {
file_free(smbreq, result);
return status;
}
info = FILE_WAS_CREATED;
} else {
/* these are ignored for SMB2 */
in_create_options &= ~(0x10);/* NTCREATEX_OPTIONS_SYNC_ALERT */
in_create_options &= ~(0x20);/* NTCREATEX_OPTIONS_ASYNC_ALERT */
status = SMB_VFS_CREATE_FILE(req->tcon->compat_conn,
smbreq,
0, /* root_dir_fid */
in_name,
CFF_DOS_PATH, /* create_file_flags */
in_desired_access,
in_share_access,
in_create_disposition,
in_create_options,
in_file_attributes,
0, /* oplock_request */
0, /* allocation_size */
NULL, /* security_descriptor */
NULL, /* ea_list */
&result,
&info,
&sbuf);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
}
*out_oplock_level = 0;
if ((in_create_disposition == FILE_SUPERSEDE)
&& (info == FILE_WAS_OVERWRITTEN)) {
*out_create_action = FILE_WAS_SUPERSEDED;
} else {
*out_create_action = info;
}
unix_timespec_to_nt_time(out_creation_time, sbuf.st_ex_btime);
unix_timespec_to_nt_time(out_last_access_time, sbuf.st_ex_atime);
unix_timespec_to_nt_time(out_last_write_time,sbuf.st_ex_mtime);
unix_timespec_to_nt_time(out_change_time, sbuf.st_ex_ctime);
*out_allocation_size = sbuf.st_ex_blksize * sbuf.st_ex_blocks;
*out_end_of_file = sbuf.st_ex_size;
*out_file_attributes = dos_mode(result->conn,result->fsp_name,&sbuf);
if (*out_file_attributes == 0) {
*out_file_attributes = FILE_ATTRIBUTE_NORMAL;
}
*out_file_id_volatile = result->fnum;
return NT_STATUS_OK;
}
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