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samba-mirror/source3/smbd/nttrans.c
Volker Lendecke 444fc0bfcc smbd: Use dom_sid_str_buf 
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Gary Lockyer <gary@catalyst.net.nz>
2018-12-20 23:40:24 +01:00

3237 lines
82 KiB
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/*
Unix SMB/CIFS implementation.
SMB NT transaction handling
Copyright (C) Jeremy Allison 1994-2007
Copyright (C) Stefan (metze) Metzmacher 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 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 "system/filesys.h"
#include "smbd/smbd.h"
#include "smbd/globals.h"
#include "fake_file.h"
#include "../libcli/security/security.h"
#include "../librpc/gen_ndr/ndr_security.h"
#include "passdb/lookup_sid.h"
#include "auth.h"
#include "smbprofile.h"
#include "libsmb/libsmb.h"
#include "lib/util_ea.h"
#include "librpc/gen_ndr/ndr_quota.h"
#include "librpc/gen_ndr/ndr_security.h"
extern const struct generic_mapping file_generic_mapping;
static char *nttrans_realloc(char **ptr, size_t size)
{
if (ptr==NULL) {
smb_panic("nttrans_realloc() called with NULL ptr");
}
*ptr = (char *)SMB_REALLOC(*ptr, size);
if(*ptr == NULL) {
return NULL;
}
memset(*ptr,'\0',size);
return *ptr;
}
/****************************************************************************
Send the required number of replies back.
We assume all fields other than the data fields are
set correctly for the type of call.
HACK ! Always assumes smb_setup field is zero.
****************************************************************************/
static void send_nt_replies(connection_struct *conn,
struct smb_request *req, NTSTATUS nt_error,
char *params, int paramsize,
char *pdata, int datasize)
{
int data_to_send = datasize;
int params_to_send = paramsize;
int useable_space;
char *pp = params;
char *pd = pdata;
int params_sent_thistime, data_sent_thistime, total_sent_thistime;
int alignment_offset = 1;
int data_alignment_offset = 0;
struct smbXsrv_connection *xconn = req->xconn;
int max_send = xconn->smb1.sessions.max_send;
/*
* If there genuinely are no parameters or data to send just send
* the empty packet.
*/
if(params_to_send == 0 && data_to_send == 0) {
reply_outbuf(req, 18, 0);
if (NT_STATUS_V(nt_error)) {
error_packet_set((char *)req->outbuf,
0, 0, nt_error,
__LINE__,__FILE__);
}
show_msg((char *)req->outbuf);
if (!srv_send_smb(xconn,
(char *)req->outbuf,
true, req->seqnum+1,
IS_CONN_ENCRYPTED(conn),
&req->pcd)) {
exit_server_cleanly("send_nt_replies: srv_send_smb failed.");
}
TALLOC_FREE(req->outbuf);
return;
}
/*
* When sending params and data ensure that both are nicely aligned.
* Only do this alignment when there is also data to send - else
* can cause NT redirector problems.
*/
if (((params_to_send % 4) != 0) && (data_to_send != 0)) {
data_alignment_offset = 4 - (params_to_send % 4);
}
/*
* Space is bufsize minus Netbios over TCP header minus SMB header.
* The alignment_offset is to align the param bytes on a four byte
* boundary (2 bytes for data len, one byte pad).
* NT needs this to work correctly.
*/
useable_space = max_send - (smb_size
+ 2 * 18 /* wct */
+ alignment_offset
+ data_alignment_offset);
if (useable_space < 0) {
char *msg = talloc_asprintf(
talloc_tos(),
"send_nt_replies failed sanity useable_space = %d!!!",
useable_space);
DEBUG(0, ("%s\n", msg));
exit_server_cleanly(msg);
}
while (params_to_send || data_to_send) {
/*
* Calculate whether we will totally or partially fill this packet.
*/
total_sent_thistime = params_to_send + data_to_send;
/*
* We can never send more than useable_space.
*/
total_sent_thistime = MIN(total_sent_thistime, useable_space);
reply_outbuf(req, 18,
total_sent_thistime + alignment_offset
+ data_alignment_offset);
/*
* Set total params and data to be sent.
*/
SIVAL(req->outbuf,smb_ntr_TotalParameterCount,paramsize);
SIVAL(req->outbuf,smb_ntr_TotalDataCount,datasize);
/*
* Calculate how many parameters and data we can fit into
* this packet. Parameters get precedence.
*/
params_sent_thistime = MIN(params_to_send,useable_space);
data_sent_thistime = useable_space - params_sent_thistime;
data_sent_thistime = MIN(data_sent_thistime,data_to_send);
SIVAL(req->outbuf, smb_ntr_ParameterCount,
params_sent_thistime);
if(params_sent_thistime == 0) {
SIVAL(req->outbuf,smb_ntr_ParameterOffset,0);
SIVAL(req->outbuf,smb_ntr_ParameterDisplacement,0);
} else {
/*
* smb_ntr_ParameterOffset is the offset from the start of the SMB header to the
* parameter bytes, however the first 4 bytes of outbuf are
* the Netbios over TCP header. Thus use smb_base() to subtract
* them from the calculation.
*/
SIVAL(req->outbuf,smb_ntr_ParameterOffset,
((smb_buf(req->outbuf)+alignment_offset)
- smb_base(req->outbuf)));
/*
* Absolute displacement of param bytes sent in this packet.
*/
SIVAL(req->outbuf, smb_ntr_ParameterDisplacement,
pp - params);
}
/*
* Deal with the data portion.
*/
SIVAL(req->outbuf, smb_ntr_DataCount, data_sent_thistime);
if(data_sent_thistime == 0) {
SIVAL(req->outbuf,smb_ntr_DataOffset,0);
SIVAL(req->outbuf,smb_ntr_DataDisplacement, 0);
} else {
/*
* The offset of the data bytes is the offset of the
* parameter bytes plus the number of parameters being sent this time.
*/
SIVAL(req->outbuf, smb_ntr_DataOffset,
((smb_buf(req->outbuf)+alignment_offset) -
smb_base(req->outbuf))
+ params_sent_thistime + data_alignment_offset);
SIVAL(req->outbuf,smb_ntr_DataDisplacement, pd - pdata);
}
/*
* Copy the param bytes into the packet.
*/
if(params_sent_thistime) {
if (alignment_offset != 0) {
memset(smb_buf(req->outbuf), 0,
alignment_offset);
}
memcpy((smb_buf(req->outbuf)+alignment_offset), pp,
params_sent_thistime);
}
/*
* Copy in the data bytes
*/
if(data_sent_thistime) {
if (data_alignment_offset != 0) {
memset((smb_buf(req->outbuf)+alignment_offset+
params_sent_thistime), 0,
data_alignment_offset);
}
memcpy(smb_buf(req->outbuf)+alignment_offset
+params_sent_thistime+data_alignment_offset,
pd,data_sent_thistime);
}
DEBUG(9,("nt_rep: params_sent_thistime = %d, data_sent_thistime = %d, useable_space = %d\n",
params_sent_thistime, data_sent_thistime, useable_space));
DEBUG(9,("nt_rep: params_to_send = %d, data_to_send = %d, paramsize = %d, datasize = %d\n",
params_to_send, data_to_send, paramsize, datasize));
if (NT_STATUS_V(nt_error)) {
error_packet_set((char *)req->outbuf,
0, 0, nt_error,
__LINE__,__FILE__);
}
/* Send the packet */
show_msg((char *)req->outbuf);
if (!srv_send_smb(xconn,
(char *)req->outbuf,
true, req->seqnum+1,
IS_CONN_ENCRYPTED(conn),
&req->pcd)) {
exit_server_cleanly("send_nt_replies: srv_send_smb failed.");
}
TALLOC_FREE(req->outbuf);
pp += params_sent_thistime;
pd += data_sent_thistime;
params_to_send -= params_sent_thistime;
data_to_send -= data_sent_thistime;
/*
* Sanity check
*/
if(params_to_send < 0 || data_to_send < 0) {
DEBUG(0,("send_nt_replies failed sanity check pts = %d, dts = %d\n!!!",
params_to_send, data_to_send));
exit_server_cleanly("send_nt_replies: internal error");
}
}
}
/****************************************************************************
Reply to an NT create and X call on a pipe
****************************************************************************/
static void nt_open_pipe(char *fname, connection_struct *conn,
struct smb_request *req, uint16_t *ppnum)
{
files_struct *fsp;
NTSTATUS status;
DEBUG(4,("nt_open_pipe: Opening pipe %s.\n", fname));
/* Strip \\ off the name if present. */
while (fname[0] == '\\') {
fname++;
}
status = open_np_file(req, fname, &fsp);
if (!NT_STATUS_IS_OK(status)) {
if (NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
reply_botherror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND,
ERRDOS, ERRbadpipe);
return;
}
reply_nterror(req, status);
return;
}
*ppnum = fsp->fnum;
return;
}
/****************************************************************************
Reply to an NT create and X call for pipes.
****************************************************************************/
static void do_ntcreate_pipe_open(connection_struct *conn,
struct smb_request *req)
{
char *fname = NULL;
uint16_t pnum = FNUM_FIELD_INVALID;
char *p = NULL;
uint32_t flags = IVAL(req->vwv+3, 1);
TALLOC_CTX *ctx = talloc_tos();
srvstr_pull_req_talloc(ctx, req, &fname, req->buf, STR_TERMINATE);
if (!fname) {
reply_botherror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND,
ERRDOS, ERRbadpipe);
return;
}
nt_open_pipe(fname, conn, req, &pnum);
if (req->outbuf) {
/* error reply */
return;
}
/*
* Deal with pipe return.
*/
if (flags & EXTENDED_RESPONSE_REQUIRED) {
/* This is very strange. We
* return 50 words, but only set
* the wcnt to 42 ? It's definitely
* what happens on the wire....
*/
reply_outbuf(req, 50, 0);
SCVAL(req->outbuf,smb_wct,42);
} else {
reply_outbuf(req, 34, 0);
}
SSVAL(req->outbuf, smb_vwv0, 0xff); /* andx chain ends */
SSVAL(req->outbuf, smb_vwv1, 0); /* no andx offset */
p = (char *)req->outbuf + smb_vwv2;
p++;
SSVAL(p,0,pnum);
p += 2;
SIVAL(p,0,FILE_WAS_OPENED);
p += 4;
p += 32;
SIVAL(p,0,FILE_ATTRIBUTE_NORMAL); /* File Attributes. */
p += 20;
/* File type. */
SSVAL(p,0,FILE_TYPE_MESSAGE_MODE_PIPE);
/* Device state. */
SSVAL(p,2, 0x5FF); /* ? */
p += 4;
if (flags & EXTENDED_RESPONSE_REQUIRED) {
p += 25;
SIVAL(p,0,FILE_GENERIC_ALL);
/*
* For pipes W2K3 seems to return
* 0x12019B next.
* This is ((FILE_GENERIC_READ|FILE_GENERIC_WRITE) & ~FILE_APPEND_DATA)
*/
SIVAL(p,4,(FILE_GENERIC_READ|FILE_GENERIC_WRITE)&~FILE_APPEND_DATA);
}
DEBUG(5,("do_ntcreate_pipe_open: open pipe = %s\n", fname));
}
struct case_semantics_state {
connection_struct *conn;
bool case_sensitive;
bool case_preserve;
bool short_case_preserve;
};
/****************************************************************************
Restore case semantics.
****************************************************************************/
static int restore_case_semantics(struct case_semantics_state *state)
{
state->conn->case_sensitive = state->case_sensitive;
state->conn->case_preserve = state->case_preserve;
state->conn->short_case_preserve = state->short_case_preserve;
return 0;
}
/****************************************************************************
Save case semantics.
****************************************************************************/
static struct case_semantics_state *set_posix_case_semantics(TALLOC_CTX *mem_ctx,
connection_struct *conn)
{
struct case_semantics_state *result;
if (!(result = talloc(mem_ctx, struct case_semantics_state))) {
return NULL;
}
result->conn = conn;
result->case_sensitive = conn->case_sensitive;
result->case_preserve = conn->case_preserve;
result->short_case_preserve = conn->short_case_preserve;
/* Set to POSIX. */
conn->case_sensitive = True;
conn->case_preserve = True;
conn->short_case_preserve = True;
talloc_set_destructor(result, restore_case_semantics);
return result;
}
/****************************************************************************
Reply to an NT create and X call.
****************************************************************************/
void reply_ntcreate_and_X(struct smb_request *req)
{
connection_struct *conn = req->conn;
struct smb_filename *smb_fname = NULL;
char *fname = NULL;
uint32_t flags;
uint32_t access_mask;
uint32_t file_attributes;
uint32_t share_access;
uint32_t create_disposition;
uint32_t create_options;
uint16_t root_dir_fid;
uint64_t allocation_size;
/* Breakout the oplock request bits so we can set the
reply bits separately. */
uint32_t fattr=0;
off_t file_len = 0;
int info = 0;
files_struct *fsp = NULL;
char *p = NULL;
struct timespec create_timespec;
struct timespec c_timespec;
struct timespec a_timespec;
struct timespec m_timespec;
NTSTATUS status;
int oplock_request;
uint8_t oplock_granted = NO_OPLOCK_RETURN;
struct case_semantics_state *case_state = NULL;
uint32_t ucf_flags;
TALLOC_CTX *ctx = talloc_tos();
START_PROFILE(SMBntcreateX);
if (req->wct < 24) {
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
goto out;
}
flags = IVAL(req->vwv+3, 1);
access_mask = IVAL(req->vwv+7, 1);
file_attributes = IVAL(req->vwv+13, 1);
share_access = IVAL(req->vwv+15, 1);
create_disposition = IVAL(req->vwv+17, 1);
create_options = IVAL(req->vwv+19, 1);
root_dir_fid = (uint16_t)IVAL(req->vwv+5, 1);
allocation_size = BVAL(req->vwv+9, 1);
srvstr_get_path_req(ctx, req, &fname, (const char *)req->buf,
STR_TERMINATE, &status);
if (!NT_STATUS_IS_OK(status)) {
reply_nterror(req, status);
goto out;
}
DEBUG(10,("reply_ntcreate_and_X: flags = 0x%x, access_mask = 0x%x "
"file_attributes = 0x%x, share_access = 0x%x, "
"create_disposition = 0x%x create_options = 0x%x "
"root_dir_fid = 0x%x, fname = %s\n",
(unsigned int)flags,
(unsigned int)access_mask,
(unsigned int)file_attributes,
(unsigned int)share_access,
(unsigned int)create_disposition,
(unsigned int)create_options,
(unsigned int)root_dir_fid,
fname));
/*
* we need to remove ignored bits when they come directly from the client
* because we reuse some of them for internal stuff
*/
create_options &= ~NTCREATEX_OPTIONS_MUST_IGNORE_MASK;
/*
* If it's an IPC, use the pipe handler.
*/
if (IS_IPC(conn)) {
if (lp_nt_pipe_support()) {
do_ntcreate_pipe_open(conn, req);
goto out;
}
reply_nterror(req, NT_STATUS_ACCESS_DENIED);
goto out;
}
oplock_request = (flags & REQUEST_OPLOCK) ? EXCLUSIVE_OPLOCK : 0;
if (oplock_request) {
oplock_request |= (flags & REQUEST_BATCH_OPLOCK)
? BATCH_OPLOCK : 0;
}
if (file_attributes & FILE_FLAG_POSIX_SEMANTICS) {
case_state = set_posix_case_semantics(ctx, conn);
if (!case_state) {
reply_nterror(req, NT_STATUS_NO_MEMORY);
goto out;
}
}
ucf_flags = filename_create_ucf_flags(req, create_disposition);
status = filename_convert(ctx,
conn,
fname,
ucf_flags,
NULL,
NULL,
&smb_fname);
TALLOC_FREE(case_state);
if (!NT_STATUS_IS_OK(status)) {
if (NT_STATUS_EQUAL(status,NT_STATUS_PATH_NOT_COVERED)) {
reply_botherror(req,
NT_STATUS_PATH_NOT_COVERED,
ERRSRV, ERRbadpath);
goto out;
}
reply_nterror(req, status);
goto out;
}
/*
* Bug #6898 - clients using Windows opens should
* never be able to set this attribute into the
* VFS.
*/
file_attributes &= ~FILE_FLAG_POSIX_SEMANTICS;
status = SMB_VFS_CREATE_FILE(
conn, /* conn */
req, /* req */
root_dir_fid, /* root_dir_fid */
smb_fname, /* fname */
access_mask, /* access_mask */
share_access, /* share_access */
create_disposition, /* create_disposition*/
create_options, /* create_options */
file_attributes, /* file_attributes */
oplock_request, /* oplock_request */
NULL, /* lease */
allocation_size, /* allocation_size */
0, /* private_flags */
NULL, /* sd */
NULL, /* ea_list */
&fsp, /* result */
&info, /* pinfo */
NULL, NULL); /* create context */
if (!NT_STATUS_IS_OK(status)) {
if (open_was_deferred(req->xconn, req->mid)) {
/* We have re-scheduled this call, no error. */
goto out;
}
reply_openerror(req, status);
goto out;
}
/* Ensure we're pointing at the correct stat struct. */
TALLOC_FREE(smb_fname);
smb_fname = fsp->fsp_name;
/*
* If the caller set the extended oplock request bit
* and we granted one (by whatever means) - set the
* correct bit for extended oplock reply.
*/
if (oplock_request &&
(lp_fake_oplocks(SNUM(conn))
|| EXCLUSIVE_OPLOCK_TYPE(fsp->oplock_type))) {
/*
* Exclusive oplock granted
*/
if (flags & REQUEST_BATCH_OPLOCK) {
oplock_granted = BATCH_OPLOCK_RETURN;
} else {
oplock_granted = EXCLUSIVE_OPLOCK_RETURN;
}
} else if (fsp->oplock_type == LEVEL_II_OPLOCK) {
oplock_granted = LEVEL_II_OPLOCK_RETURN;
} else {
oplock_granted = NO_OPLOCK_RETURN;
}
file_len = smb_fname->st.st_ex_size;
if (flags & EXTENDED_RESPONSE_REQUIRED) {
/* This is very strange. We
* return 50 words, but only set
* the wcnt to 42 ? It's definitely
* what happens on the wire....
*/
reply_outbuf(req, 50, 0);
SCVAL(req->outbuf,smb_wct,42);
} else {
reply_outbuf(req, 34, 0);
}
SSVAL(req->outbuf, smb_vwv0, 0xff); /* andx chain ends */
SSVAL(req->outbuf, smb_vwv1, 0); /* no andx offset */
p = (char *)req->outbuf + smb_vwv2;
SCVAL(p, 0, oplock_granted);
p++;
SSVAL(p,0,fsp->fnum);
p += 2;
if ((create_disposition == FILE_SUPERSEDE)
&& (info == FILE_WAS_OVERWRITTEN)) {
SIVAL(p,0,FILE_WAS_SUPERSEDED);
} else {
SIVAL(p,0,info);
}
p += 4;
fattr = dos_mode(conn, smb_fname);
if (fattr == 0) {
fattr = FILE_ATTRIBUTE_NORMAL;
}
/* Create time. */
create_timespec = get_create_timespec(conn, fsp, smb_fname);
a_timespec = smb_fname->st.st_ex_atime;
m_timespec = smb_fname->st.st_ex_mtime;
c_timespec = get_change_timespec(conn, fsp, smb_fname);
if (lp_dos_filetime_resolution(SNUM(conn))) {
dos_filetime_timespec(&create_timespec);
dos_filetime_timespec(&a_timespec);
dos_filetime_timespec(&m_timespec);
dos_filetime_timespec(&c_timespec);
}
put_long_date_timespec(conn->ts_res, p, create_timespec); /* create time. */
p += 8;
put_long_date_timespec(conn->ts_res, p, a_timespec); /* access time */
p += 8;
put_long_date_timespec(conn->ts_res, p, m_timespec); /* write time */
p += 8;
put_long_date_timespec(conn->ts_res, p, c_timespec); /* change time */
p += 8;
SIVAL(p,0,fattr); /* File Attributes. */
p += 4;
SOFF_T(p, 0, SMB_VFS_GET_ALLOC_SIZE(conn,fsp,&smb_fname->st));
p += 8;
SOFF_T(p,0,file_len);
p += 8;
if (flags & EXTENDED_RESPONSE_REQUIRED) {
uint16_t file_status = (NO_EAS|NO_SUBSTREAMS|NO_REPARSETAG);
unsigned int num_streams = 0;
struct stream_struct *streams = NULL;
if (lp_ea_support(SNUM(conn))) {
size_t num_names = 0;
/* Do we have any EA's ? */
status = get_ea_names_from_file(
ctx, conn, fsp, smb_fname, NULL, &num_names);
if (NT_STATUS_IS_OK(status) && num_names) {
file_status &= ~NO_EAS;
}
}
status = vfs_streaminfo(conn, NULL, smb_fname, ctx,
&num_streams, &streams);
/* There is always one stream, ::$DATA. */
if (NT_STATUS_IS_OK(status) && num_streams > 1) {
file_status &= ~NO_SUBSTREAMS;
}
TALLOC_FREE(streams);
SSVAL(p,2,file_status);
}
p += 4;
SCVAL(p,0,fsp->is_directory ? 1 : 0);
if (flags & EXTENDED_RESPONSE_REQUIRED) {
uint32_t perms = 0;
p += 25;
if (fsp->is_directory ||
fsp->can_write ||
can_write_to_file(conn, smb_fname)) {
perms = FILE_GENERIC_ALL;
} else {
perms = FILE_GENERIC_READ|FILE_EXECUTE;
}
SIVAL(p,0,perms);
}
DEBUG(5,("reply_ntcreate_and_X: %s, open name = %s\n",
fsp_fnum_dbg(fsp), smb_fname_str_dbg(smb_fname)));
out:
END_PROFILE(SMBntcreateX);
return;
}
/****************************************************************************
Reply to a NT_TRANSACT_CREATE call to open a pipe.
****************************************************************************/
static void do_nt_transact_create_pipe(connection_struct *conn,
struct smb_request *req,
uint16_t **ppsetup, uint32_t setup_count,
char **ppparams, uint32_t parameter_count,
char **ppdata, uint32_t data_count)
{
char *fname = NULL;
char *params = *ppparams;
uint16_t pnum = FNUM_FIELD_INVALID;
char *p = NULL;
NTSTATUS status;
size_t param_len;
uint32_t flags;
TALLOC_CTX *ctx = talloc_tos();
/*
* Ensure minimum number of parameters sent.
*/
if(parameter_count < 54) {
DEBUG(0,("do_nt_transact_create_pipe - insufficient parameters (%u)\n", (unsigned int)parameter_count));
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
return;
}
flags = IVAL(params,0);
if (req->posix_pathnames) {
srvstr_get_path_posix(ctx,
params,
req->flags2,
&fname,
params+53,
parameter_count-53,
STR_TERMINATE,
&status);
} else {
srvstr_get_path(ctx,
params,
req->flags2,
&fname,
params+53,
parameter_count-53,
STR_TERMINATE,
&status);
}
if (!NT_STATUS_IS_OK(status)) {
reply_nterror(req, status);
return;
}
nt_open_pipe(fname, conn, req, &pnum);
if (req->outbuf) {
/* Error return */
return;
}
/* Realloc the size of parameters and data we will return */
if (flags & EXTENDED_RESPONSE_REQUIRED) {
/* Extended response is 32 more byyes. */
param_len = 101;
} else {
param_len = 69;
}
params = nttrans_realloc(ppparams, param_len);
if(params == NULL) {
reply_nterror(req, NT_STATUS_NO_MEMORY);
return;
}
p = params;
SCVAL(p,0,NO_OPLOCK_RETURN);
p += 2;
SSVAL(p,0,pnum);
p += 2;
SIVAL(p,0,FILE_WAS_OPENED);
p += 8;
p += 32;
SIVAL(p,0,FILE_ATTRIBUTE_NORMAL); /* File Attributes. */
p += 20;
/* File type. */
SSVAL(p,0,FILE_TYPE_MESSAGE_MODE_PIPE);
/* Device state. */
SSVAL(p,2, 0x5FF); /* ? */
p += 4;
if (flags & EXTENDED_RESPONSE_REQUIRED) {
p += 25;
SIVAL(p,0,FILE_GENERIC_ALL);
/*
* For pipes W2K3 seems to return
* 0x12019B next.
* This is ((FILE_GENERIC_READ|FILE_GENERIC_WRITE) & ~FILE_APPEND_DATA)
*/
SIVAL(p,4,(FILE_GENERIC_READ|FILE_GENERIC_WRITE)&~FILE_APPEND_DATA);
}
DEBUG(5,("do_nt_transact_create_pipe: open name = %s\n", fname));
/* Send the required number of replies */
send_nt_replies(conn, req, NT_STATUS_OK, params, param_len, *ppdata, 0);
return;
}
/*********************************************************************
Windows seems to do canonicalization of inheritance bits. Do the
same.
*********************************************************************/
static void canonicalize_inheritance_bits(struct security_descriptor *psd)
{
bool set_auto_inherited = false;
/*
* We need to filter out the
* SEC_DESC_DACL_AUTO_INHERITED|SEC_DESC_DACL_AUTO_INHERIT_REQ
* bits. If both are set we store SEC_DESC_DACL_AUTO_INHERITED
* as this alters whether SEC_ACE_FLAG_INHERITED_ACE is set
* when an ACE is inherited. Otherwise we zero these bits out.
* See:
*
* http://social.msdn.microsoft.com/Forums/eu/os_fileservices/thread/11f77b68-731e-407d-b1b3-064750716531
*
* for details.
*/
if ((psd->type & (SEC_DESC_DACL_AUTO_INHERITED|SEC_DESC_DACL_AUTO_INHERIT_REQ))
== (SEC_DESC_DACL_AUTO_INHERITED|SEC_DESC_DACL_AUTO_INHERIT_REQ)) {
set_auto_inherited = true;
}
psd->type &= ~(SEC_DESC_DACL_AUTO_INHERITED|SEC_DESC_DACL_AUTO_INHERIT_REQ);
if (set_auto_inherited) {
psd->type |= SEC_DESC_DACL_AUTO_INHERITED;
}
}
/****************************************************************************
Internal fn to set security descriptors.
****************************************************************************/
NTSTATUS set_sd(files_struct *fsp, struct security_descriptor *psd,
uint32_t security_info_sent)
{
NTSTATUS status;
if (!CAN_WRITE(fsp->conn)) {
return NT_STATUS_ACCESS_DENIED;
}
if (!lp_nt_acl_support(SNUM(fsp->conn))) {
return NT_STATUS_OK;
}
if (S_ISLNK(fsp->fsp_name->st.st_ex_mode)) {
DEBUG(10, ("ACL set on symlink %s denied.\n",
fsp_str_dbg(fsp)));
return NT_STATUS_ACCESS_DENIED;
}
if (psd->owner_sid == NULL) {
security_info_sent &= ~SECINFO_OWNER;
}
if (psd->group_sid == NULL) {
security_info_sent &= ~SECINFO_GROUP;
}
/* Ensure we have at least one thing set. */
if ((security_info_sent & (SECINFO_OWNER|SECINFO_GROUP|SECINFO_DACL|SECINFO_SACL)) == 0) {
/* Just like W2K3 */
return NT_STATUS_OK;
}
/* Ensure we have the rights to do this. */
if (security_info_sent & SECINFO_OWNER) {
if (!(fsp->access_mask & SEC_STD_WRITE_OWNER)) {
return NT_STATUS_ACCESS_DENIED;
}
}
if (security_info_sent & SECINFO_GROUP) {
if (!(fsp->access_mask & SEC_STD_WRITE_OWNER)) {
return NT_STATUS_ACCESS_DENIED;
}
}
if (security_info_sent & SECINFO_DACL) {
if (!(fsp->access_mask & SEC_STD_WRITE_DAC)) {
return NT_STATUS_ACCESS_DENIED;
}
/* Convert all the generic bits. */
if (psd->dacl) {
security_acl_map_generic(psd->dacl, &file_generic_mapping);
}
}
if (security_info_sent & SECINFO_SACL) {
if (!(fsp->access_mask & SEC_FLAG_SYSTEM_SECURITY)) {
return NT_STATUS_ACCESS_DENIED;
}
/* Convert all the generic bits. */
if (psd->sacl) {
security_acl_map_generic(psd->sacl, &file_generic_mapping);
}
}
canonicalize_inheritance_bits(psd);
if (DEBUGLEVEL >= 10) {
DEBUG(10,("set_sd for file %s\n", fsp_str_dbg(fsp)));
NDR_PRINT_DEBUG(security_descriptor, psd);
}
status = SMB_VFS_FSET_NT_ACL(fsp, security_info_sent, psd);
TALLOC_FREE(psd);
return status;
}
/****************************************************************************
Internal fn to set security descriptors from a data blob.
****************************************************************************/
NTSTATUS set_sd_blob(files_struct *fsp, uint8_t *data, uint32_t sd_len,
uint32_t security_info_sent)
{
struct security_descriptor *psd = NULL;
NTSTATUS status;
if (sd_len == 0) {
return NT_STATUS_INVALID_PARAMETER;
}
status = unmarshall_sec_desc(talloc_tos(), data, sd_len, &psd);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
return set_sd(fsp, psd, security_info_sent);
}
/****************************************************************************
Reply to a NT_TRANSACT_CREATE call (needs to process SD's).
****************************************************************************/
static void call_nt_transact_create(connection_struct *conn,
struct smb_request *req,
uint16_t **ppsetup, uint32_t setup_count,
char **ppparams, uint32_t parameter_count,
char **ppdata, uint32_t data_count,
uint32_t max_data_count)
{
struct smb_filename *smb_fname = NULL;
char *fname = NULL;
char *params = *ppparams;
char *data = *ppdata;
/* Breakout the oplock request bits so we can set the reply bits separately. */
uint32_t fattr=0;
off_t file_len = 0;
int info = 0;
files_struct *fsp = NULL;
char *p = NULL;
uint32_t flags;
uint32_t access_mask;
uint32_t file_attributes;
uint32_t share_access;
uint32_t create_disposition;
uint32_t create_options;
uint32_t sd_len;
struct security_descriptor *sd = NULL;
uint32_t ea_len;
uint16_t root_dir_fid;
struct timespec create_timespec;
struct timespec c_timespec;
struct timespec a_timespec;
struct timespec m_timespec;
struct ea_list *ea_list = NULL;
NTSTATUS status;
size_t param_len;
uint64_t allocation_size;
int oplock_request;
uint8_t oplock_granted;
struct case_semantics_state *case_state = NULL;
uint32_t ucf_flags;
TALLOC_CTX *ctx = talloc_tos();
DEBUG(5,("call_nt_transact_create\n"));
/*
* If it's an IPC, use the pipe handler.
*/
if (IS_IPC(conn)) {
if (lp_nt_pipe_support()) {
do_nt_transact_create_pipe(
conn, req,
ppsetup, setup_count,
ppparams, parameter_count,
ppdata, data_count);
goto out;
}
reply_nterror(req, NT_STATUS_ACCESS_DENIED);
goto out;
}
/*
* Ensure minimum number of parameters sent.
*/
if(parameter_count < 54) {
DEBUG(0,("call_nt_transact_create - insufficient parameters (%u)\n", (unsigned int)parameter_count));
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
goto out;
}
flags = IVAL(params,0);
access_mask = IVAL(params,8);
file_attributes = IVAL(params,20);
share_access = IVAL(params,24);
create_disposition = IVAL(params,28);
create_options = IVAL(params,32);
sd_len = IVAL(params,36);
ea_len = IVAL(params,40);
root_dir_fid = (uint16_t)IVAL(params,4);
allocation_size = BVAL(params,12);
/*
* we need to remove ignored bits when they come directly from the client
* because we reuse some of them for internal stuff
*/
create_options &= ~NTCREATEX_OPTIONS_MUST_IGNORE_MASK;
if (req->posix_pathnames) {
srvstr_get_path_posix(ctx,
params,
req->flags2,
&fname,
params+53,
parameter_count-53,
STR_TERMINATE,
&status);
} else {
srvstr_get_path(ctx,
params,
req->flags2,
&fname,
params+53,
parameter_count-53,
STR_TERMINATE,
&status);
}
if (!NT_STATUS_IS_OK(status)) {
reply_nterror(req, status);
goto out;
}
if (file_attributes & FILE_FLAG_POSIX_SEMANTICS) {
case_state = set_posix_case_semantics(ctx, conn);
if (!case_state) {
reply_nterror(req, NT_STATUS_NO_MEMORY);
goto out;
}
}
ucf_flags = filename_create_ucf_flags(req, create_disposition);
status = filename_convert(ctx,
conn,
fname,
ucf_flags,
NULL,
NULL,
&smb_fname);
TALLOC_FREE(case_state);
if (!NT_STATUS_IS_OK(status)) {
if (NT_STATUS_EQUAL(status,NT_STATUS_PATH_NOT_COVERED)) {
reply_botherror(req,
NT_STATUS_PATH_NOT_COVERED,
ERRSRV, ERRbadpath);
goto out;
}
reply_nterror(req, status);
goto out;
}
/* Ensure the data_len is correct for the sd and ea values given. */
if ((ea_len + sd_len > data_count)
|| (ea_len > data_count) || (sd_len > data_count)
|| (ea_len + sd_len < ea_len) || (ea_len + sd_len < sd_len)) {
DEBUG(10, ("call_nt_transact_create - ea_len = %u, sd_len = "
"%u, data_count = %u\n", (unsigned int)ea_len,
(unsigned int)sd_len, (unsigned int)data_count));
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
goto out;
}
if (sd_len) {
DEBUG(10, ("call_nt_transact_create - sd_len = %d\n",
sd_len));
status = unmarshall_sec_desc(ctx, (uint8_t *)data, sd_len,
&sd);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(10, ("call_nt_transact_create: "
"unmarshall_sec_desc failed: %s\n",
nt_errstr(status)));
reply_nterror(req, status);
goto out;
}
}
if (ea_len) {
if (!lp_ea_support(SNUM(conn))) {
DEBUG(10, ("call_nt_transact_create - ea_len = %u but "
"EA's not supported.\n",
(unsigned int)ea_len));
reply_nterror(req, NT_STATUS_EAS_NOT_SUPPORTED);
goto out;
}
if (ea_len < 10) {
DEBUG(10,("call_nt_transact_create - ea_len = %u - "
"too small (should be more than 10)\n",
(unsigned int)ea_len ));
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
goto out;
}
/* We have already checked that ea_len <= data_count here. */
ea_list = read_nttrans_ea_list(talloc_tos(), data + sd_len,
ea_len);
if (ea_list == NULL) {
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
goto out;
}
if (!req->posix_pathnames &&
ea_list_has_invalid_name(ea_list)) {
/* Realloc the size of parameters and data we will return */
if (flags & EXTENDED_RESPONSE_REQUIRED) {
/* Extended response is 32 more byyes. */
param_len = 101;
} else {
param_len = 69;
}
params = nttrans_realloc(ppparams, param_len);
if(params == NULL) {
reply_nterror(req, NT_STATUS_NO_MEMORY);
goto out;
}
memset(params, '\0', param_len);
send_nt_replies(conn, req, STATUS_INVALID_EA_NAME,
params, param_len, NULL, 0);
goto out;
}
}
oplock_request = (flags & REQUEST_OPLOCK) ? EXCLUSIVE_OPLOCK : 0;
if (oplock_request) {
oplock_request |= (flags & REQUEST_BATCH_OPLOCK)
? BATCH_OPLOCK : 0;
}
/*
* Bug #6898 - clients using Windows opens should
* never be able to set this attribute into the
* VFS.
*/
file_attributes &= ~FILE_FLAG_POSIX_SEMANTICS;
status = SMB_VFS_CREATE_FILE(
conn, /* conn */
req, /* req */
root_dir_fid, /* root_dir_fid */
smb_fname, /* fname */
access_mask, /* access_mask */
share_access, /* share_access */
create_disposition, /* create_disposition*/
create_options, /* create_options */
file_attributes, /* file_attributes */
oplock_request, /* oplock_request */
NULL, /* lease */
allocation_size, /* allocation_size */
0, /* private_flags */
sd, /* sd */
ea_list, /* ea_list */
&fsp, /* result */
&info, /* pinfo */
NULL, NULL); /* create context */
if(!NT_STATUS_IS_OK(status)) {
if (open_was_deferred(req->xconn, req->mid)) {
/* We have re-scheduled this call, no error. */
return;
}
reply_openerror(req, status);
goto out;
}
/* Ensure we're pointing at the correct stat struct. */
TALLOC_FREE(smb_fname);
smb_fname = fsp->fsp_name;
/*
* If the caller set the extended oplock request bit
* and we granted one (by whatever means) - set the
* correct bit for extended oplock reply.
*/
if (oplock_request &&
(lp_fake_oplocks(SNUM(conn))
|| EXCLUSIVE_OPLOCK_TYPE(fsp->oplock_type))) {
/*
* Exclusive oplock granted
*/
if (flags & REQUEST_BATCH_OPLOCK) {
oplock_granted = BATCH_OPLOCK_RETURN;
} else {
oplock_granted = EXCLUSIVE_OPLOCK_RETURN;
}
} else if (fsp->oplock_type == LEVEL_II_OPLOCK) {
oplock_granted = LEVEL_II_OPLOCK_RETURN;
} else {
oplock_granted = NO_OPLOCK_RETURN;
}
file_len = smb_fname->st.st_ex_size;
/* Realloc the size of parameters and data we will return */
if (flags & EXTENDED_RESPONSE_REQUIRED) {
/* Extended response is 32 more byyes. */
param_len = 101;
} else {
param_len = 69;
}
params = nttrans_realloc(ppparams, param_len);
if(params == NULL) {
reply_nterror(req, NT_STATUS_NO_MEMORY);
goto out;
}
p = params;
SCVAL(p, 0, oplock_granted);
p += 2;
SSVAL(p,0,fsp->fnum);
p += 2;
if ((create_disposition == FILE_SUPERSEDE)
&& (info == FILE_WAS_OVERWRITTEN)) {
SIVAL(p,0,FILE_WAS_SUPERSEDED);
} else {
SIVAL(p,0,info);
}
p += 8;
fattr = dos_mode(conn, smb_fname);
if (fattr == 0) {
fattr = FILE_ATTRIBUTE_NORMAL;
}
/* Create time. */
create_timespec = get_create_timespec(conn, fsp, smb_fname);
a_timespec = smb_fname->st.st_ex_atime;
m_timespec = smb_fname->st.st_ex_mtime;
c_timespec = get_change_timespec(conn, fsp, smb_fname);
if (lp_dos_filetime_resolution(SNUM(conn))) {
dos_filetime_timespec(&create_timespec);
dos_filetime_timespec(&a_timespec);
dos_filetime_timespec(&m_timespec);
dos_filetime_timespec(&c_timespec);
}
put_long_date_timespec(conn->ts_res, p, create_timespec); /* create time. */
p += 8;
put_long_date_timespec(conn->ts_res, p, a_timespec); /* access time */
p += 8;
put_long_date_timespec(conn->ts_res, p, m_timespec); /* write time */
p += 8;
put_long_date_timespec(conn->ts_res, p, c_timespec); /* change time */
p += 8;
SIVAL(p,0,fattr); /* File Attributes. */
p += 4;
SOFF_T(p, 0, SMB_VFS_GET_ALLOC_SIZE(conn, fsp, &smb_fname->st));
p += 8;
SOFF_T(p,0,file_len);
p += 8;
if (flags & EXTENDED_RESPONSE_REQUIRED) {
uint16_t file_status = (NO_EAS|NO_SUBSTREAMS|NO_REPARSETAG);
unsigned int num_streams = 0;
struct stream_struct *streams = NULL;
if (lp_ea_support(SNUM(conn))) {
size_t num_names = 0;
/* Do we have any EA's ? */
status = get_ea_names_from_file(
ctx, conn, fsp, smb_fname, NULL, &num_names);
if (NT_STATUS_IS_OK(status) && num_names) {
file_status &= ~NO_EAS;
}
}
status = vfs_streaminfo(conn, NULL, smb_fname, ctx,
&num_streams, &streams);
/* There is always one stream, ::$DATA. */
if (NT_STATUS_IS_OK(status) && num_streams > 1) {
file_status &= ~NO_SUBSTREAMS;
}
TALLOC_FREE(streams);
SSVAL(p,2,file_status);
}
p += 4;
SCVAL(p,0,fsp->is_directory ? 1 : 0);
if (flags & EXTENDED_RESPONSE_REQUIRED) {
uint32_t perms = 0;
p += 25;
if (fsp->is_directory ||
fsp->can_write ||
can_write_to_file(conn, smb_fname)) {
perms = FILE_GENERIC_ALL;
} else {
perms = FILE_GENERIC_READ|FILE_EXECUTE;
}
SIVAL(p,0,perms);
}
DEBUG(5,("call_nt_transact_create: open name = %s\n",
smb_fname_str_dbg(smb_fname)));
/* Send the required number of replies */
send_nt_replies(conn, req, NT_STATUS_OK, params, param_len, *ppdata, 0);
out:
return;
}
/****************************************************************************
Reply to a NT CANCEL request.
conn POINTER CAN BE NULL HERE !
****************************************************************************/
void reply_ntcancel(struct smb_request *req)
{
struct smbXsrv_connection *xconn = req->xconn;
struct smbd_server_connection *sconn = req->sconn;
/*
* Go through and cancel any pending change notifies.
*/
START_PROFILE(SMBntcancel);
srv_cancel_sign_response(xconn);
remove_pending_change_notify_requests_by_mid(sconn, req->mid);
remove_pending_lock_requests_by_mid_smb1(sconn, req->mid);
DEBUG(3,("reply_ntcancel: cancel called on mid = %llu.\n",
(unsigned long long)req->mid));
END_PROFILE(SMBntcancel);
return;
}
/****************************************************************************
Copy a file.
****************************************************************************/
static NTSTATUS copy_internals(TALLOC_CTX *ctx,
connection_struct *conn,
struct smb_request *req,
struct smb_filename *smb_fname_src,
struct smb_filename *smb_fname_dst,
uint32_t attrs)
{
files_struct *fsp1,*fsp2;
uint32_t fattr;
int info;
off_t ret=-1;
NTSTATUS status = NT_STATUS_OK;
char *parent;
if (!CAN_WRITE(conn)) {
status = NT_STATUS_MEDIA_WRITE_PROTECTED;
goto out;
}
/* Source must already exist. */
if (!VALID_STAT(smb_fname_src->st)) {
status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
goto out;
}
/* Ensure attributes match. */
fattr = dos_mode(conn, smb_fname_src);
if ((fattr & ~attrs) & (FILE_ATTRIBUTE_HIDDEN | FILE_ATTRIBUTE_SYSTEM)) {
status = NT_STATUS_NO_SUCH_FILE;
goto out;
}
/* Disallow if dst file already exists. */
if (VALID_STAT(smb_fname_dst->st)) {
status = NT_STATUS_OBJECT_NAME_COLLISION;
goto out;
}
/* No links from a directory. */
if (S_ISDIR(smb_fname_src->st.st_ex_mode)) {
status = NT_STATUS_FILE_IS_A_DIRECTORY;
goto out;
}
DEBUG(10,("copy_internals: doing file copy %s to %s\n",
smb_fname_str_dbg(smb_fname_src),
smb_fname_str_dbg(smb_fname_dst)));
status = SMB_VFS_CREATE_FILE(
conn, /* conn */
req, /* req */
0, /* root_dir_fid */
smb_fname_src, /* fname */
FILE_READ_DATA|FILE_READ_ATTRIBUTES|
FILE_READ_EA, /* access_mask */
(FILE_SHARE_READ | FILE_SHARE_WRITE | /* share_access */
FILE_SHARE_DELETE),
FILE_OPEN, /* create_disposition*/
0, /* create_options */
FILE_ATTRIBUTE_NORMAL, /* file_attributes */
NO_OPLOCK, /* oplock_request */
NULL, /* lease */
0, /* allocation_size */
0, /* private_flags */
NULL, /* sd */
NULL, /* ea_list */
&fsp1, /* result */
&info, /* pinfo */
NULL, NULL); /* create context */
if (!NT_STATUS_IS_OK(status)) {
goto out;
}
status = SMB_VFS_CREATE_FILE(
conn, /* conn */
req, /* req */
0, /* root_dir_fid */
smb_fname_dst, /* fname */
FILE_WRITE_DATA|FILE_WRITE_ATTRIBUTES|
FILE_WRITE_EA, /* access_mask */
(FILE_SHARE_READ | FILE_SHARE_WRITE | /* share_access */
FILE_SHARE_DELETE),
FILE_CREATE, /* create_disposition*/
0, /* create_options */
fattr, /* file_attributes */
NO_OPLOCK, /* oplock_request */
NULL, /* lease */
0, /* allocation_size */
0, /* private_flags */
NULL, /* sd */
NULL, /* ea_list */
&fsp2, /* result */
&info, /* pinfo */
NULL, NULL); /* create context */
if (!NT_STATUS_IS_OK(status)) {
close_file(NULL, fsp1, ERROR_CLOSE);
goto out;
}
if (smb_fname_src->st.st_ex_size) {
ret = vfs_transfer_file(fsp1, fsp2, smb_fname_src->st.st_ex_size);
}
/*
* As we are opening fsp1 read-only we only expect
* an error on close on fsp2 if we are out of space.
* Thus we don't look at the error return from the
* close of fsp1.
*/
close_file(NULL, fsp1, NORMAL_CLOSE);
/* Ensure the modtime is set correctly on the destination file. */
set_close_write_time(fsp2, smb_fname_src->st.st_ex_mtime);
status = close_file(NULL, fsp2, NORMAL_CLOSE);
/* Grrr. We have to do this as open_file_ntcreate adds FILE_ATTRIBUTE_ARCHIVE when it
creates the file. This isn't the correct thing to do in the copy
case. JRA */
if (!parent_dirname(talloc_tos(), smb_fname_dst->base_name, &parent,
NULL)) {
status = NT_STATUS_NO_MEMORY;
goto out;
}
file_set_dosmode(conn, smb_fname_dst, fattr, parent, false);
TALLOC_FREE(parent);
if (ret < (off_t)smb_fname_src->st.st_ex_size) {
status = NT_STATUS_DISK_FULL;
goto out;
}
out:
if (!NT_STATUS_IS_OK(status)) {
DEBUG(3,("copy_internals: Error %s copy file %s to %s\n",
nt_errstr(status), smb_fname_str_dbg(smb_fname_src),
smb_fname_str_dbg(smb_fname_dst)));
}
return status;
}
/****************************************************************************
Reply to a NT rename request.
****************************************************************************/
void reply_ntrename(struct smb_request *req)
{
connection_struct *conn = req->conn;
struct smb_filename *smb_fname_old = NULL;
struct smb_filename *smb_fname_new = NULL;
char *oldname = NULL;
char *newname = NULL;
const char *p;
NTSTATUS status;
bool src_has_wcard = False;
bool dest_has_wcard = False;
uint32_t attrs;
uint32_t ucf_flags_src = ucf_flags_from_smb_request(req);
uint32_t ucf_flags_dst = ucf_flags_from_smb_request(req);
uint16_t rename_type;
TALLOC_CTX *ctx = talloc_tos();
bool stream_rename = false;
START_PROFILE(SMBntrename);
if (req->wct < 4) {
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
goto out;
}
attrs = SVAL(req->vwv+0, 0);
rename_type = SVAL(req->vwv+1, 0);
p = (const char *)req->buf + 1;
p += srvstr_get_path_req_wcard(ctx, req, &oldname, p, STR_TERMINATE,
&status, &src_has_wcard);
if (!NT_STATUS_IS_OK(status)) {
reply_nterror(req, status);
goto out;
}
if (!req->posix_pathnames && ms_has_wild(oldname)) {
reply_nterror(req, NT_STATUS_OBJECT_PATH_SYNTAX_BAD);
goto out;
}
p++;
p += srvstr_get_path_req_wcard(ctx, req, &newname, p, STR_TERMINATE,
&status, &dest_has_wcard);
if (!NT_STATUS_IS_OK(status)) {
reply_nterror(req, status);
goto out;
}
if (!req->posix_pathnames) {
/* The newname must begin with a ':' if the
oldname contains a ':'. */
if (strchr_m(oldname, ':')) {
if (newname[0] != ':') {
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
goto out;
}
stream_rename = true;
}
}
/*
* If this is a rename operation, allow wildcards and save the
* destination's last component.
*/
if (rename_type == RENAME_FLAG_RENAME) {
ucf_flags_src |= UCF_COND_ALLOW_WCARD_LCOMP;
ucf_flags_dst |= UCF_COND_ALLOW_WCARD_LCOMP | UCF_SAVE_LCOMP;
}
/* rename_internals() calls unix_convert(), so don't call it here. */
status = filename_convert(ctx, conn,
oldname,
ucf_flags_src,
NULL,
NULL,
&smb_fname_old);
if (!NT_STATUS_IS_OK(status)) {
if (NT_STATUS_EQUAL(status,
NT_STATUS_PATH_NOT_COVERED)) {
reply_botherror(req,
NT_STATUS_PATH_NOT_COVERED,
ERRSRV, ERRbadpath);
goto out;
}
reply_nterror(req, status);
goto out;
}
status = filename_convert(ctx, conn,
newname,
ucf_flags_dst,
NULL,
&dest_has_wcard,
&smb_fname_new);
if (!NT_STATUS_IS_OK(status)) {
if (NT_STATUS_EQUAL(status,
NT_STATUS_PATH_NOT_COVERED)) {
reply_botherror(req,
NT_STATUS_PATH_NOT_COVERED,
ERRSRV, ERRbadpath);
goto out;
}
reply_nterror(req, status);
goto out;
}
if (stream_rename) {
/* smb_fname_new must be the same as smb_fname_old. */
TALLOC_FREE(smb_fname_new->base_name);
smb_fname_new->base_name = talloc_strdup(smb_fname_new,
smb_fname_old->base_name);
if (!smb_fname_new->base_name) {
reply_nterror(req, NT_STATUS_NO_MEMORY);
goto out;
}
}
DEBUG(3,("reply_ntrename: %s -> %s\n",
smb_fname_str_dbg(smb_fname_old),
smb_fname_str_dbg(smb_fname_new)));
switch(rename_type) {
case RENAME_FLAG_RENAME:
status = rename_internals(ctx, conn, req,
smb_fname_old, smb_fname_new,
attrs, False, src_has_wcard,
dest_has_wcard,
DELETE_ACCESS);
break;
case RENAME_FLAG_HARD_LINK:
if (src_has_wcard || dest_has_wcard) {
/* No wildcards. */
status = NT_STATUS_OBJECT_PATH_SYNTAX_BAD;
} else {
status = hardlink_internals(ctx, conn,
req,
false,
smb_fname_old,
smb_fname_new);
}
break;
case RENAME_FLAG_COPY:
if (src_has_wcard || dest_has_wcard) {
/* No wildcards. */
status = NT_STATUS_OBJECT_PATH_SYNTAX_BAD;
} else {
status = copy_internals(ctx, conn, req,
smb_fname_old,
smb_fname_new,
attrs);
}
break;
case RENAME_FLAG_MOVE_CLUSTER_INFORMATION:
status = NT_STATUS_INVALID_PARAMETER;
break;
default:
status = NT_STATUS_ACCESS_DENIED; /* Default error. */
break;
}
if (!NT_STATUS_IS_OK(status)) {
if (open_was_deferred(req->xconn, req->mid)) {
/* We have re-scheduled this call. */
goto out;
}
reply_nterror(req, status);
goto out;
}
reply_outbuf(req, 0, 0);
out:
END_PROFILE(SMBntrename);
return;
}
/****************************************************************************
Reply to a notify change - queue the request and
don't allow a directory to be opened.
****************************************************************************/
static void smbd_smb1_notify_reply(struct smb_request *req,
NTSTATUS error_code,
uint8_t *buf, size_t len)
{
send_nt_replies(req->conn, req, error_code, (char *)buf, len, NULL, 0);
}
static void call_nt_transact_notify_change(connection_struct *conn,
struct smb_request *req,
uint16_t **ppsetup,
uint32_t setup_count,
char **ppparams,
uint32_t parameter_count,
char **ppdata, uint32_t data_count,
uint32_t max_data_count,
uint32_t max_param_count)
{
uint16_t *setup = *ppsetup;
files_struct *fsp;
uint32_t filter;
NTSTATUS status;
bool recursive;
if(setup_count < 6) {
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
return;
}
fsp = file_fsp(req, SVAL(setup,4));
filter = IVAL(setup, 0);
recursive = (SVAL(setup, 6) != 0) ? True : False;
DEBUG(3,("call_nt_transact_notify_change\n"));
if(!fsp) {
reply_nterror(req, NT_STATUS_INVALID_HANDLE);
return;
}
{
char *filter_string;
if (!(filter_string = notify_filter_string(NULL, filter))) {
reply_nterror(req,NT_STATUS_NO_MEMORY);
return;
}
DEBUG(3,("call_nt_transact_notify_change: notify change "
"called on %s, filter = %s, recursive = %d\n",
fsp_str_dbg(fsp), filter_string, recursive));
TALLOC_FREE(filter_string);
}
if((!fsp->is_directory) || (conn != fsp->conn)) {
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
return;
}
if (fsp->notify == NULL) {
status = change_notify_create(fsp, filter, recursive);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(10, ("change_notify_create returned %s\n",
nt_errstr(status)));
reply_nterror(req, status);
return;
}
}
if (change_notify_fsp_has_changes(fsp)) {
/*
* We've got changes pending, respond immediately
*/
/*
* TODO: write a torture test to check the filtering behaviour
* here.
*/
change_notify_reply(req,
NT_STATUS_OK,
max_param_count,
fsp->notify,
smbd_smb1_notify_reply);
/*
* change_notify_reply() above has independently sent its
* results
*/
return;
}
/*
* No changes pending, queue the request
*/
status = change_notify_add_request(req,
max_param_count,
filter,
recursive, fsp,
smbd_smb1_notify_reply);
if (!NT_STATUS_IS_OK(status)) {
reply_nterror(req, status);
}
return;
}
/****************************************************************************
Reply to an NT transact rename command.
****************************************************************************/
static void call_nt_transact_rename(connection_struct *conn,
struct smb_request *req,
uint16_t **ppsetup, uint32_t setup_count,
char **ppparams, uint32_t parameter_count,
char **ppdata, uint32_t data_count,
uint32_t max_data_count)
{
char *params = *ppparams;
char *new_name = NULL;
files_struct *fsp = NULL;
bool dest_has_wcard = False;
NTSTATUS status;
TALLOC_CTX *ctx = talloc_tos();
if(parameter_count < 5) {
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
return;
}
fsp = file_fsp(req, SVAL(params, 0));
if (!check_fsp(conn, req, fsp)) {
return;
}
if (req->posix_pathnames) {
srvstr_get_path_wcard_posix(ctx,
params,
req->flags2,
&new_name,
params+4,
parameter_count - 4,
STR_TERMINATE,
&status,
&dest_has_wcard);
} else {
srvstr_get_path_wcard(ctx,
params,
req->flags2,
&new_name,
params+4,
parameter_count - 4,
STR_TERMINATE,
&status,
&dest_has_wcard);
}
if (!NT_STATUS_IS_OK(status)) {
reply_nterror(req, status);
return;
}
/*
* W2K3 ignores this request as the RAW-RENAME test
* demonstrates, so we do.
*/
send_nt_replies(conn, req, NT_STATUS_OK, NULL, 0, NULL, 0);
DEBUG(3,("nt transact rename from = %s, to = %s ignored!\n",
fsp_str_dbg(fsp), new_name));
return;
}
/******************************************************************************
Fake up a completely empty SD.
*******************************************************************************/
static NTSTATUS get_null_nt_acl(TALLOC_CTX *mem_ctx, struct security_descriptor **ppsd)
{
size_t sd_size;
*ppsd = make_standard_sec_desc( mem_ctx, &global_sid_World, &global_sid_World, NULL, &sd_size);
if(!*ppsd) {
DEBUG(0,("get_null_nt_acl: Unable to malloc space for security descriptor.\n"));
return NT_STATUS_NO_MEMORY;
}
return NT_STATUS_OK;
}
/****************************************************************************
Reply to query a security descriptor.
Callable from SMB1 and SMB2.
If it returns NT_STATUS_BUFFER_TOO_SMALL, pdata_size is initialized with
the required size.
****************************************************************************/
NTSTATUS smbd_do_query_security_desc(connection_struct *conn,
TALLOC_CTX *mem_ctx,
files_struct *fsp,
uint32_t security_info_wanted,
uint32_t max_data_count,
uint8_t **ppmarshalled_sd,
size_t *psd_size)
{
NTSTATUS status;
struct security_descriptor *psd = NULL;
TALLOC_CTX *frame = talloc_stackframe();
/*
* Get the permissions to return.
*/
if ((security_info_wanted & SECINFO_SACL) &&
!(fsp->access_mask & SEC_FLAG_SYSTEM_SECURITY)) {
DEBUG(10, ("Access to SACL denied.\n"));
TALLOC_FREE(frame);
return NT_STATUS_ACCESS_DENIED;
}
if ((security_info_wanted & (SECINFO_DACL|SECINFO_OWNER|SECINFO_GROUP)) &&
!(fsp->access_mask & SEC_STD_READ_CONTROL)) {
DEBUG(10, ("Access to DACL, OWNER, or GROUP denied.\n"));
TALLOC_FREE(frame);
return NT_STATUS_ACCESS_DENIED;
}
if (S_ISLNK(fsp->fsp_name->st.st_ex_mode)) {
DEBUG(10, ("ACL get on symlink %s denied.\n",
fsp_str_dbg(fsp)));
TALLOC_FREE(frame);
return NT_STATUS_ACCESS_DENIED;
}
if (security_info_wanted & (SECINFO_DACL|SECINFO_OWNER|
SECINFO_GROUP|SECINFO_SACL)) {
/* Don't return SECINFO_LABEL if anything else was
requested. See bug #8458. */
security_info_wanted &= ~SECINFO_LABEL;
}
if (!lp_nt_acl_support(SNUM(conn))) {
status = get_null_nt_acl(frame, &psd);
} else if (security_info_wanted & SECINFO_LABEL) {
/* Like W2K3 return a null object. */
status = get_null_nt_acl(frame, &psd);
} else {
status = SMB_VFS_FGET_NT_ACL(
fsp, security_info_wanted, frame, &psd);
}
if (!NT_STATUS_IS_OK(status)) {
TALLOC_FREE(frame);
return status;
}
if (!(security_info_wanted & SECINFO_OWNER)) {
psd->owner_sid = NULL;
}
if (!(security_info_wanted & SECINFO_GROUP)) {
psd->group_sid = NULL;
}
if (!(security_info_wanted & SECINFO_DACL)) {
psd->type &= ~SEC_DESC_DACL_PRESENT;
psd->dacl = NULL;
}
if (!(security_info_wanted & SECINFO_SACL)) {
psd->type &= ~SEC_DESC_SACL_PRESENT;
psd->sacl = NULL;
}
/* If the SACL/DACL is NULL, but was requested, we mark that it is
* present in the reply to match Windows behavior */
if (psd->sacl == NULL &&
security_info_wanted & SECINFO_SACL)
psd->type |= SEC_DESC_SACL_PRESENT;
if (psd->dacl == NULL &&
security_info_wanted & SECINFO_DACL)
psd->type |= SEC_DESC_DACL_PRESENT;
if (security_info_wanted & SECINFO_LABEL) {
/* Like W2K3 return a null object. */
psd->owner_sid = NULL;
psd->group_sid = NULL;
psd->dacl = NULL;
psd->sacl = NULL;
psd->type &= ~(SEC_DESC_DACL_PRESENT|SEC_DESC_SACL_PRESENT);
}
*psd_size = ndr_size_security_descriptor(psd, 0);
DEBUG(3,("smbd_do_query_security_desc: sd_size = %lu.\n",
(unsigned long)*psd_size));
if (DEBUGLEVEL >= 10) {
DEBUG(10,("smbd_do_query_security_desc for file %s\n",
fsp_str_dbg(fsp)));
NDR_PRINT_DEBUG(security_descriptor, psd);
}
if (max_data_count < *psd_size) {
TALLOC_FREE(frame);
return NT_STATUS_BUFFER_TOO_SMALL;
}
status = marshall_sec_desc(mem_ctx, psd,
ppmarshalled_sd, psd_size);
if (!NT_STATUS_IS_OK(status)) {
TALLOC_FREE(frame);
return status;
}
TALLOC_FREE(frame);
return NT_STATUS_OK;
}
/****************************************************************************
SMB1 reply to query a security descriptor.
****************************************************************************/
static void call_nt_transact_query_security_desc(connection_struct *conn,
struct smb_request *req,
uint16_t **ppsetup,
uint32_t setup_count,
char **ppparams,
uint32_t parameter_count,
char **ppdata,
uint32_t data_count,
uint32_t max_data_count)
{
char *params = *ppparams;
char *data = *ppdata;
size_t sd_size = 0;
uint32_t security_info_wanted;
files_struct *fsp = NULL;
NTSTATUS status;
uint8_t *marshalled_sd = NULL;
if(parameter_count < 8) {
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
return;
}
fsp = file_fsp(req, SVAL(params,0));
if(!fsp) {
reply_nterror(req, NT_STATUS_INVALID_HANDLE);
return;
}
security_info_wanted = IVAL(params,4);
DEBUG(3,("call_nt_transact_query_security_desc: file = %s, "
"info_wanted = 0x%x\n", fsp_str_dbg(fsp),
(unsigned int)security_info_wanted));
params = nttrans_realloc(ppparams, 4);
if(params == NULL) {
reply_nterror(req, NT_STATUS_NO_MEMORY);
return;
}
/*
* Get the permissions to return.
*/
status = smbd_do_query_security_desc(conn,
talloc_tos(),
fsp,
security_info_wanted &
SMB_SUPPORTED_SECINFO_FLAGS,
max_data_count,
&marshalled_sd,
&sd_size);
if (NT_STATUS_EQUAL(status, NT_STATUS_BUFFER_TOO_SMALL)) {
SIVAL(params,0,(uint32_t)sd_size);
send_nt_replies(conn, req, NT_STATUS_BUFFER_TOO_SMALL,
params, 4, NULL, 0);
return;
}
if (!NT_STATUS_IS_OK(status)) {
reply_nterror(req, status);
return;
}
SMB_ASSERT(sd_size > 0);
SIVAL(params,0,(uint32_t)sd_size);
if (max_data_count < sd_size) {
send_nt_replies(conn, req, NT_STATUS_BUFFER_TOO_SMALL,
params, 4, NULL, 0);
return;
}
/*
* Allocate the data we will return.
*/
data = nttrans_realloc(ppdata, sd_size);
if(data == NULL) {
reply_nterror(req, NT_STATUS_NO_MEMORY);
return;
}
memcpy(data, marshalled_sd, sd_size);
send_nt_replies(conn, req, NT_STATUS_OK, params, 4, data, (int)sd_size);
return;
}
/****************************************************************************
Reply to set a security descriptor. Map to UNIX perms or POSIX ACLs.
****************************************************************************/
static void call_nt_transact_set_security_desc(connection_struct *conn,
struct smb_request *req,
uint16_t **ppsetup,
uint32_t setup_count,
char **ppparams,
uint32_t parameter_count,
char **ppdata,
uint32_t data_count,
uint32_t max_data_count)
{
char *params= *ppparams;
char *data = *ppdata;
files_struct *fsp = NULL;
uint32_t security_info_sent = 0;
NTSTATUS status;
if(parameter_count < 8) {
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
return;
}
if((fsp = file_fsp(req, SVAL(params,0))) == NULL) {
reply_nterror(req, NT_STATUS_INVALID_HANDLE);
return;
}
if (!CAN_WRITE(fsp->conn)) {
reply_nterror(req, NT_STATUS_ACCESS_DENIED);
return;
}
if(!lp_nt_acl_support(SNUM(conn))) {
goto done;
}
security_info_sent = IVAL(params,4);
DEBUG(3,("call_nt_transact_set_security_desc: file = %s, sent 0x%x\n",
fsp_str_dbg(fsp), (unsigned int)security_info_sent));
if (data_count == 0) {
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
return;
}
status = set_sd_blob(fsp, (uint8_t *)data, data_count,
security_info_sent & SMB_SUPPORTED_SECINFO_FLAGS);
if (!NT_STATUS_IS_OK(status)) {
reply_nterror(req, status);
return;
}
done:
send_nt_replies(conn, req, NT_STATUS_OK, NULL, 0, NULL, 0);
return;
}
/****************************************************************************
Reply to NT IOCTL
****************************************************************************/
static void call_nt_transact_ioctl(connection_struct *conn,
struct smb_request *req,
uint16_t **ppsetup, uint32_t setup_count,
char **ppparams, uint32_t parameter_count,
char **ppdata, uint32_t data_count,
uint32_t max_data_count)
{
NTSTATUS status;
uint32_t function;
uint16_t fidnum;
files_struct *fsp;
uint8_t isFSctl;
uint8_t compfilter;
char *out_data = NULL;
uint32_t out_data_len = 0;
char *pdata = *ppdata;
TALLOC_CTX *ctx = talloc_tos();
if (setup_count != 8) {
DEBUG(3,("call_nt_transact_ioctl: invalid setup count %d\n", setup_count));
reply_nterror(req, NT_STATUS_NOT_SUPPORTED);
return;
}
function = IVAL(*ppsetup, 0);
fidnum = SVAL(*ppsetup, 4);
isFSctl = CVAL(*ppsetup, 6);
compfilter = CVAL(*ppsetup, 7);
DEBUG(10, ("call_nt_transact_ioctl: function[0x%08X] FID[0x%04X] isFSctl[0x%02X] compfilter[0x%02X]\n",
function, fidnum, isFSctl, compfilter));
fsp=file_fsp(req, fidnum);
/*
* We don't really implement IOCTLs, especially on files.
*/
if (!isFSctl) {
DEBUG(10, ("isFSctl: 0x%02X indicates IOCTL, not FSCTL!\n",
isFSctl));
reply_nterror(req, NT_STATUS_NOT_SUPPORTED);
return;
}
/* Has to be for an open file! */
if (!check_fsp_open(conn, req, fsp)) {
return;
}
SMB_PERFCOUNT_SET_IOCTL(&req->pcd, function);
/*
* out_data might be allocated by the VFS module, but talloc should be
* used, and should be cleaned up when the request ends.
*/
status = SMB_VFS_FSCTL(fsp,
ctx,
function,
req->flags2,
(uint8_t *)pdata,
data_count,
(uint8_t **)&out_data,
max_data_count,
&out_data_len);
if (!NT_STATUS_IS_OK(status)) {
reply_nterror(req, status);
} else {
send_nt_replies(conn, req, NT_STATUS_OK, NULL, 0, out_data, out_data_len);
}
}
#ifdef HAVE_SYS_QUOTAS
static enum ndr_err_code fill_qtlist_from_sids(TALLOC_CTX *mem_ctx,
struct files_struct *fsp,
SMB_NTQUOTA_HANDLE *qt_handle,
struct dom_sid *sids,
uint32_t elems)
{
uint32_t i;
TALLOC_CTX *list_ctx = NULL;
list_ctx = talloc_init("quota_sid_list");
if (list_ctx == NULL) {
DBG_ERR("failed to allocate\n");
return NDR_ERR_ALLOC;
}
if (qt_handle->quota_list!=NULL) {
free_ntquota_list(&(qt_handle->quota_list));
}
for (i = 0; i < elems; i++) {
SMB_NTQUOTA_STRUCT qt;
SMB_NTQUOTA_LIST *list_item;
bool ok;
if (!NT_STATUS_IS_OK(vfs_get_ntquota(fsp,
SMB_USER_QUOTA_TYPE,
&sids[i], &qt))) {
/* non fatal error, return empty item in result */
ZERO_STRUCT(qt);
continue;
}
list_item = talloc_zero(list_ctx, SMB_NTQUOTA_LIST);
if (list_item == NULL) {
DBG_ERR("failed to allocate\n");
return NDR_ERR_ALLOC;
}
ok = sid_to_uid(&sids[i], &list_item->uid);
if (!ok) {
struct dom_sid_buf buf;
DBG_WARNING("Could not convert SID %s to uid\n",
dom_sid_str_buf(&sids[i], &buf));
/* No idea what to return here... */
return NDR_ERR_INVALID_POINTER;
}
list_item->quotas = talloc_zero(list_item, SMB_NTQUOTA_STRUCT);
if (list_item->quotas == NULL) {
DBG_ERR("failed to allocate\n");
return NDR_ERR_ALLOC;
}
*list_item->quotas = qt;
list_item->mem_ctx = list_ctx;
DLIST_ADD(qt_handle->quota_list, list_item);
}
qt_handle->tmp_list = qt_handle->quota_list;
return NDR_ERR_SUCCESS;
}
static enum ndr_err_code extract_sids_from_buf(TALLOC_CTX *mem_ctx,
uint32_t sidlistlength,
DATA_BLOB *sid_buf,
struct dom_sid **sids,
uint32_t *num)
{
DATA_BLOB blob;
uint32_t i = 0;
enum ndr_err_code err;
struct sid_list_elem {
struct sid_list_elem *prev, *next;
struct dom_sid sid;
};
struct sid_list_elem *sid_list = NULL;
struct sid_list_elem *iter = NULL;
TALLOC_CTX *list_ctx = talloc_init("sid_list");
if (!list_ctx) {
DBG_ERR("OOM\n");
err = NDR_ERR_ALLOC;
goto done;
}
*num = 0;
*sids = NULL;
if (sidlistlength) {
uint32_t offset = 0;
struct ndr_pull *ndr_pull = NULL;
if (sidlistlength > sid_buf->length) {
DBG_ERR("sid_list_length 0x%x exceeds "
"available bytes %zx\n",
sidlistlength,
sid_buf->length);
err = NDR_ERR_OFFSET;
goto done;
}
while (true) {
struct file_get_quota_info info;
struct sid_list_elem *item = NULL;
uint32_t new_offset = 0;
blob.data = sid_buf->data + offset;
blob.length = sidlistlength - offset;
ndr_pull = ndr_pull_init_blob(&blob, list_ctx);
if (!ndr_pull) {
DBG_ERR("OOM\n");
err = NDR_ERR_ALLOC;
goto done;
}
err = ndr_pull_file_get_quota_info(ndr_pull,
NDR_SCALARS | NDR_BUFFERS, &info);
if (!NDR_ERR_CODE_IS_SUCCESS(err)) {
DBG_ERR("Failed to pull file_get_quota_info "
"from sidlist buffer\n");
goto done;
}
item = talloc_zero(list_ctx, struct sid_list_elem);
if (!item) {
DBG_ERR("OOM\n");
err = NDR_ERR_ALLOC;
goto done;
}
item->sid = info.sid;
DLIST_ADD(sid_list, item);
i++;
if (i == UINT32_MAX) {
DBG_ERR("Integer overflow\n");
err = NDR_ERR_ARRAY_SIZE;
goto done;
}
new_offset = info.next_entry_offset;
/* if new_offset == 0 no more sid(s) to read. */
if (new_offset == 0) {
break;
}
/* Integer wrap? */
if ((offset + new_offset) < offset) {
DBG_ERR("Integer wrap while adding "
"new_offset 0x%x to current "
"buffer offset 0x%x\n",
new_offset, offset);
err = NDR_ERR_OFFSET;
goto done;
}
offset += new_offset;
/* check if new offset is outside buffer boundry. */
if (offset >= sidlistlength) {
DBG_ERR("bufsize 0x%x exceeded by "
"new offset 0x%x)\n",
sidlistlength,
offset);
err = NDR_ERR_OFFSET;
goto done;
}
}
*sids = talloc_zero_array(mem_ctx, struct dom_sid, i);
if (*sids == NULL) {
DBG_ERR("OOM\n");
err = NDR_ERR_ALLOC;
goto done;
}
*num = i;
for (iter = sid_list, i = 0; iter; iter = iter->next, i++) {
struct dom_sid_buf buf;
(*sids)[i] = iter->sid;
DBG_DEBUG("quota SID[%u] %s\n",
(unsigned int)i,
dom_sid_str_buf(&iter->sid, &buf));
}
}
err = NDR_ERR_SUCCESS;
done:
TALLOC_FREE(list_ctx);
return err;
}
NTSTATUS smbd_do_query_getinfo_quota(TALLOC_CTX *mem_ctx,
files_struct *fsp,
bool restart_scan,
bool return_single,
uint32_t sid_list_length,
DATA_BLOB *sid_buf,
uint32_t max_data_count,
uint8_t **p_data,
uint32_t *p_data_size)
{
NTSTATUS status;
SMB_NTQUOTA_HANDLE *qt_handle = NULL;
SMB_NTQUOTA_LIST *qt_list = NULL;
DATA_BLOB blob = data_blob_null;
enum ndr_err_code err;
qt_handle =
(SMB_NTQUOTA_HANDLE *)fsp->fake_file_handle->private_data;
if (sid_list_length ) {
struct dom_sid *sids;
uint32_t elems = 0;
/*
* error check pulled offsets and lengths for wrap and
* exceeding available bytes.
*/
if (sid_list_length > sid_buf->length) {
DBG_ERR("sid_list_length 0x%x exceeds "
"available bytes %zx\n",
sid_list_length,
sid_buf->length);
return NT_STATUS_INVALID_PARAMETER;
}
err = extract_sids_from_buf(mem_ctx, sid_list_length,
sid_buf, &sids, &elems);
if (!NDR_ERR_CODE_IS_SUCCESS(err) || elems == 0) {
return NT_STATUS_INVALID_PARAMETER;
}
err = fill_qtlist_from_sids(mem_ctx,
fsp,
qt_handle,
sids,
elems);
if (!NDR_ERR_CODE_IS_SUCCESS(err)) {
return NT_STATUS_INVALID_PARAMETER;
}
} else if (restart_scan) {
if (vfs_get_user_ntquota_list(fsp,
&(qt_handle->quota_list))!=0) {
return NT_STATUS_INTERNAL_ERROR;
}
} else {
if (qt_handle->quota_list!=NULL &&
qt_handle->tmp_list==NULL) {
free_ntquota_list(&(qt_handle->quota_list));
}
}
if (restart_scan !=0 ) {
qt_list = qt_handle->quota_list;
} else {
qt_list = qt_handle->tmp_list;
}
status = fill_quota_buffer(mem_ctx, qt_list,
return_single != 0,
max_data_count,
&blob,
&qt_handle->tmp_list);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
if (blob.length > max_data_count) {
return NT_STATUS_BUFFER_TOO_SMALL;
}
*p_data = blob.data;
*p_data_size = blob.length;
return NT_STATUS_OK;
}
/****************************************************************************
Reply to get user quota
****************************************************************************/
static void call_nt_transact_get_user_quota(connection_struct *conn,
struct smb_request *req,
uint16_t **ppsetup,
uint32_t setup_count,
char **ppparams,
uint32_t parameter_count,
char **ppdata,
uint32_t data_count,
uint32_t max_data_count)
{
NTSTATUS nt_status = NT_STATUS_OK;
char *params = *ppparams;
char *pdata = *ppdata;
int data_len = 0;
int param_len = 0;
files_struct *fsp = NULL;
DATA_BLOB blob = data_blob_null;
struct nttrans_query_quota_params info = {0};
enum ndr_err_code err;
TALLOC_CTX *tmp_ctx = NULL;
uint32_t resp_len = 0;
uint8_t *resp_data = 0;
tmp_ctx = talloc_init("ntquota_list");
if (!tmp_ctx) {
nt_status = NT_STATUS_NO_MEMORY;
goto error;
}
/* access check */
if (get_current_uid(conn) != sec_initial_uid()) {
DEBUG(1,("get_user_quota: access_denied service [%s] user "
"[%s]\n", lp_servicename(talloc_tos(), SNUM(conn)),
conn->session_info->unix_info->unix_name));
nt_status = NT_STATUS_ACCESS_DENIED;
goto error;
}
blob.data = (uint8_t*)params;
blob.length = parameter_count;
err = ndr_pull_struct_blob(&blob, tmp_ctx, &info,
(ndr_pull_flags_fn_t)ndr_pull_nttrans_query_quota_params);
if (!NDR_ERR_CODE_IS_SUCCESS(err)) {
DEBUG(0,("TRANSACT_GET_USER_QUOTA: failed to pull "
"query_quota_params."));
nt_status = NT_STATUS_INVALID_PARAMETER;
goto error;
}
DBG_DEBUG("info.return_single_entry = %u, info.restart_scan = %u, "
"info.sid_list_length = %u, info.start_sid_length = %u, "
"info.start_sid_offset = %u\n",
(unsigned int)info.return_single_entry,
(unsigned int)info.restart_scan,
(unsigned int)info.sid_list_length,
(unsigned int)info.start_sid_length,
(unsigned int)info.start_sid_offset);
/* set blob to point at data for further parsing */
blob.data = (uint8_t*)pdata;
blob.length = data_count;
/*
* Although MS-SMB ref is ambiguous here, a microsoft client will
* only ever send a start sid (as part of a list) with
* sid_list_length & start_sid_offset both set to the actual list
* length. Note: Only a single result is returned in this case
* In the case where either start_sid_offset or start_sid_length
* are set alone or if both set (but have different values) then
* it seems windows will return a number of entries from the start
* of the list of users with quotas set. This behaviour is undocumented
* and windows clients do not send messages of that type. As such we
* currently will reject these requests.
*/
if (info.start_sid_length
|| (info.sid_list_length != info.start_sid_offset)) {
DBG_ERR("TRANSACT_GET_USER_QUOTA: unsupported single or "
"compound sid format\n");
nt_status = NT_STATUS_INVALID_PARAMETER;
goto error;
}
/* maybe we can check the quota_fnum */
fsp = file_fsp(req, info.fid);
if (!check_fsp_ntquota_handle(conn, req, fsp)) {
DEBUG(3,("TRANSACT_GET_USER_QUOTA: no valid QUOTA HANDLE\n"));
nt_status = NT_STATUS_INVALID_HANDLE;
goto error;
}
nt_status = smbd_do_query_getinfo_quota(tmp_ctx,
fsp,
info.restart_scan,
info.return_single_entry,
info.sid_list_length,
&blob,
max_data_count,
&resp_data,
&resp_len);
if (!NT_STATUS_IS_OK(nt_status)) {
if (!NT_STATUS_EQUAL(nt_status, NT_STATUS_NO_MORE_ENTRIES)) {
goto error;
}
nt_status = NT_STATUS_OK;
}
param_len = 4;
params = nttrans_realloc(ppparams, param_len);
if(params == NULL) {
nt_status = NT_STATUS_NO_MEMORY;
goto error;
}
data_len = resp_len;
SIVAL(params, 0, data_len);
pdata = nttrans_realloc(ppdata, data_len);
memcpy(pdata, resp_data, data_len);
TALLOC_FREE(tmp_ctx);
send_nt_replies(conn, req, nt_status, params, param_len,
pdata, data_len);
return;
error:
TALLOC_FREE(tmp_ctx);
reply_nterror(req, nt_status);
}
/****************************************************************************
Reply to set user quota
****************************************************************************/
static void call_nt_transact_set_user_quota(connection_struct *conn,
struct smb_request *req,
uint16_t **ppsetup,
uint32_t setup_count,
char **ppparams,
uint32_t parameter_count,
char **ppdata,
uint32_t data_count,
uint32_t max_data_count)
{
char *params = *ppparams;
char *pdata = *ppdata;
int data_len=0,param_len=0;
SMB_NTQUOTA_STRUCT qt;
struct file_quota_information info = {0};
enum ndr_err_code err;
struct dom_sid sid;
DATA_BLOB inblob;
files_struct *fsp = NULL;
TALLOC_CTX *ctx = NULL;
NTSTATUS status = NT_STATUS_OK;
ZERO_STRUCT(qt);
/* access check */
if (get_current_uid(conn) != sec_initial_uid()) {
DEBUG(1,("set_user_quota: access_denied service [%s] user "
"[%s]\n", lp_servicename(talloc_tos(), SNUM(conn)),
conn->session_info->unix_info->unix_name));
status = NT_STATUS_ACCESS_DENIED;
goto error;
}
/*
* Ensure minimum number of parameters sent.
*/
if (parameter_count < 2) {
DEBUG(0,("TRANSACT_SET_USER_QUOTA: requires %d >= 2 bytes parameters\n",parameter_count));
status = NT_STATUS_INVALID_PARAMETER;
goto error;
}
/* maybe we can check the quota_fnum */
fsp = file_fsp(req, SVAL(params,0));
if (!check_fsp_ntquota_handle(conn, req, fsp)) {
DEBUG(3,("TRANSACT_GET_USER_QUOTA: no valid QUOTA HANDLE\n"));
status = NT_STATUS_INVALID_HANDLE;
goto error;
}
ctx = talloc_init("set_user_quota");
if (!ctx) {
status = NT_STATUS_NO_MEMORY;
goto error;
}
inblob.data = (uint8_t*)pdata;
inblob.length = data_count;
err = ndr_pull_struct_blob(
&inblob,
ctx,
&info,
(ndr_pull_flags_fn_t)ndr_pull_file_quota_information);
if (!NDR_ERR_CODE_IS_SUCCESS(err)) {
DEBUG(0,("TRANSACT_SET_USER_QUOTA: failed to pull "
"file_quota_information\n"));
status = NT_STATUS_INVALID_PARAMETER;
goto error;
}
qt.usedspace = info.quota_used;
qt.softlim = info.quota_threshold;
qt.hardlim = info.quota_limit;
sid = info.sid;
if (vfs_set_ntquota(fsp, SMB_USER_QUOTA_TYPE, &sid, &qt)!=0) {
status = NT_STATUS_INTERNAL_ERROR;
goto error;
}
send_nt_replies(conn, req, NT_STATUS_OK, params, param_len,
pdata, data_len);
TALLOC_FREE(ctx);
return;
error:
TALLOC_FREE(ctx);
reply_nterror(req, status);
}
#endif /* HAVE_SYS_QUOTAS */
static void handle_nttrans(connection_struct *conn,
struct trans_state *state,
struct smb_request *req)
{
if (get_Protocol() >= PROTOCOL_NT1) {
req->flags2 |= 0x40; /* IS_LONG_NAME */
SSVAL(discard_const_p(uint8_t, req->inbuf),smb_flg2,req->flags2);
}
SMB_PERFCOUNT_SET_SUBOP(&req->pcd, state->call);
/* Now we must call the relevant NT_TRANS function */
switch(state->call) {
case NT_TRANSACT_CREATE:
{
START_PROFILE(NT_transact_create);
call_nt_transact_create(
conn, req,
&state->setup, state->setup_count,
&state->param, state->total_param,
&state->data, state->total_data,
state->max_data_return);
END_PROFILE(NT_transact_create);
break;
}
case NT_TRANSACT_IOCTL:
{
START_PROFILE(NT_transact_ioctl);
call_nt_transact_ioctl(
conn, req,
&state->setup, state->setup_count,
&state->param, state->total_param,
&state->data, state->total_data,
state->max_data_return);
END_PROFILE(NT_transact_ioctl);
break;
}
case NT_TRANSACT_SET_SECURITY_DESC:
{
START_PROFILE(NT_transact_set_security_desc);
call_nt_transact_set_security_desc(
conn, req,
&state->setup, state->setup_count,
&state->param, state->total_param,
&state->data, state->total_data,
state->max_data_return);
END_PROFILE(NT_transact_set_security_desc);
break;
}
case NT_TRANSACT_NOTIFY_CHANGE:
{
START_PROFILE(NT_transact_notify_change);
call_nt_transact_notify_change(
conn, req,
&state->setup, state->setup_count,
&state->param, state->total_param,
&state->data, state->total_data,
state->max_data_return,
state->max_param_return);
END_PROFILE(NT_transact_notify_change);
break;
}
case NT_TRANSACT_RENAME:
{
START_PROFILE(NT_transact_rename);
call_nt_transact_rename(
conn, req,
&state->setup, state->setup_count,
&state->param, state->total_param,
&state->data, state->total_data,
state->max_data_return);
END_PROFILE(NT_transact_rename);
break;
}
case NT_TRANSACT_QUERY_SECURITY_DESC:
{
START_PROFILE(NT_transact_query_security_desc);
call_nt_transact_query_security_desc(
conn, req,
&state->setup, state->setup_count,
&state->param, state->total_param,
&state->data, state->total_data,
state->max_data_return);
END_PROFILE(NT_transact_query_security_desc);
break;
}
#ifdef HAVE_SYS_QUOTAS
case NT_TRANSACT_GET_USER_QUOTA:
{
START_PROFILE(NT_transact_get_user_quota);
call_nt_transact_get_user_quota(
conn, req,
&state->setup, state->setup_count,
&state->param, state->total_param,
&state->data, state->total_data,
state->max_data_return);
END_PROFILE(NT_transact_get_user_quota);
break;
}
case NT_TRANSACT_SET_USER_QUOTA:
{
START_PROFILE(NT_transact_set_user_quota);
call_nt_transact_set_user_quota(
conn, req,
&state->setup, state->setup_count,
&state->param, state->total_param,
&state->data, state->total_data,
state->max_data_return);
END_PROFILE(NT_transact_set_user_quota);
break;
}
#endif /* HAVE_SYS_QUOTAS */
default:
/* Error in request */
DEBUG(0,("handle_nttrans: Unknown request %d in "
"nttrans call\n", state->call));
reply_nterror(req, NT_STATUS_INVALID_LEVEL);
return;
}
return;
}
/****************************************************************************
Reply to a SMBNTtrans.
****************************************************************************/
void reply_nttrans(struct smb_request *req)
{
connection_struct *conn = req->conn;
uint32_t pscnt;
uint32_t psoff;
uint32_t dscnt;
uint32_t dsoff;
uint16_t function_code;
NTSTATUS result;
struct trans_state *state;
START_PROFILE(SMBnttrans);
if (req->wct < 19) {
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
END_PROFILE(SMBnttrans);
return;
}
pscnt = IVAL(req->vwv+9, 1);
psoff = IVAL(req->vwv+11, 1);
dscnt = IVAL(req->vwv+13, 1);
dsoff = IVAL(req->vwv+15, 1);
function_code = SVAL(req->vwv+18, 0);
if (IS_IPC(conn) && (function_code != NT_TRANSACT_CREATE)) {
reply_nterror(req, NT_STATUS_ACCESS_DENIED);
END_PROFILE(SMBnttrans);
return;
}
result = allow_new_trans(conn->pending_trans, req->mid);
if (!NT_STATUS_IS_OK(result)) {
DEBUG(2, ("Got invalid nttrans request: %s\n", nt_errstr(result)));
reply_nterror(req, result);
END_PROFILE(SMBnttrans);
return;
}
if ((state = talloc(conn, struct trans_state)) == NULL) {
reply_nterror(req, NT_STATUS_NO_MEMORY);
END_PROFILE(SMBnttrans);
return;
}
state->cmd = SMBnttrans;
state->mid = req->mid;
state->vuid = req->vuid;
state->total_data = IVAL(req->vwv+3, 1);
state->data = NULL;
state->total_param = IVAL(req->vwv+1, 1);
state->param = NULL;
state->max_data_return = IVAL(req->vwv+7, 1);
state->max_param_return = IVAL(req->vwv+5, 1);
/* setup count is in *words* */
state->setup_count = 2*CVAL(req->vwv+17, 1);
state->setup = NULL;
state->call = function_code;
DEBUG(10, ("num_setup=%u, "
"param_total=%u, this_param=%u, max_param=%u, "
"data_total=%u, this_data=%u, max_data=%u, "
"param_offset=%u, data_offset=%u\n",
(unsigned)state->setup_count,
(unsigned)state->total_param, (unsigned)pscnt,
(unsigned)state->max_param_return,
(unsigned)state->total_data, (unsigned)dscnt,
(unsigned)state->max_data_return,
(unsigned)psoff, (unsigned)dsoff));
/*
* All nttrans messages we handle have smb_wct == 19 +
* state->setup_count. Ensure this is so as a sanity check.
*/
if(req->wct != 19 + (state->setup_count/2)) {
DEBUG(2,("Invalid smb_wct %d in nttrans call (should be %d)\n",
req->wct, 19 + (state->setup_count/2)));
goto bad_param;
}
/* Don't allow more than 128mb for each value. */
if ((state->total_data > (1024*1024*128)) ||
(state->total_param > (1024*1024*128))) {
reply_nterror(req, NT_STATUS_NO_MEMORY);
END_PROFILE(SMBnttrans);
return;
}
if ((dscnt > state->total_data) || (pscnt > state->total_param))
goto bad_param;
if (state->total_data) {
if (trans_oob(state->total_data, 0, dscnt)
|| trans_oob(smb_len(req->inbuf), dsoff, dscnt)) {
goto bad_param;
}
/* Can't use talloc here, the core routines do realloc on the
* params and data. */
if ((state->data = (char *)SMB_MALLOC(state->total_data)) == NULL) {
DEBUG(0,("reply_nttrans: data malloc fail for %u "
"bytes !\n", (unsigned int)state->total_data));
TALLOC_FREE(state);
reply_nterror(req, NT_STATUS_NO_MEMORY);
END_PROFILE(SMBnttrans);
return;
}
memcpy(state->data,smb_base(req->inbuf)+dsoff,dscnt);
}
if (state->total_param) {
if (trans_oob(state->total_param, 0, pscnt)
|| trans_oob(smb_len(req->inbuf), psoff, pscnt)) {
goto bad_param;
}
/* Can't use talloc here, the core routines do realloc on the
* params and data. */
if ((state->param = (char *)SMB_MALLOC(state->total_param)) == NULL) {
DEBUG(0,("reply_nttrans: param malloc fail for %u "
"bytes !\n", (unsigned int)state->total_param));
SAFE_FREE(state->data);
TALLOC_FREE(state);
reply_nterror(req, NT_STATUS_NO_MEMORY);
END_PROFILE(SMBnttrans);
return;
}
memcpy(state->param,smb_base(req->inbuf)+psoff,pscnt);
}
state->received_data = dscnt;
state->received_param = pscnt;
if(state->setup_count > 0) {
DEBUG(10,("reply_nttrans: state->setup_count = %d\n",
state->setup_count));
/*
* No overflow possible here, state->setup_count is an
* unsigned int, being filled by a single byte from
* CVAL(req->vwv+13, 0) above. The cast in the comparison
* below is not necessary, it's here to clarify things. The
* validity of req->vwv and req->wct has been checked in
* init_smb_request already.
*/
if ((state->setup_count/2) + 19 > (unsigned int)req->wct) {
goto bad_param;
}
state->setup = (uint16_t *)TALLOC(state, state->setup_count);
if (state->setup == NULL) {
DEBUG(0,("reply_nttrans : Out of memory\n"));
SAFE_FREE(state->data);
SAFE_FREE(state->param);
TALLOC_FREE(state);
reply_nterror(req, NT_STATUS_NO_MEMORY);
END_PROFILE(SMBnttrans);
return;
}
memcpy(state->setup, req->vwv+19, state->setup_count);
dump_data(10, (uint8_t *)state->setup, state->setup_count);
}
if ((state->received_data == state->total_data) &&
(state->received_param == state->total_param)) {
handle_nttrans(conn, state, req);
SAFE_FREE(state->param);
SAFE_FREE(state->data);
TALLOC_FREE(state);
END_PROFILE(SMBnttrans);
return;
}
DLIST_ADD(conn->pending_trans, state);
/* We need to send an interim response then receive the rest
of the parameter/data bytes */
reply_outbuf(req, 0, 0);
show_msg((char *)req->outbuf);
END_PROFILE(SMBnttrans);
return;
bad_param:
DEBUG(0,("reply_nttrans: invalid trans parameters\n"));
SAFE_FREE(state->data);
SAFE_FREE(state->param);
TALLOC_FREE(state);
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
END_PROFILE(SMBnttrans);
return;
}
/****************************************************************************
Reply to a SMBnttranss
****************************************************************************/
void reply_nttranss(struct smb_request *req)
{
connection_struct *conn = req->conn;
uint32_t pcnt,poff,dcnt,doff,pdisp,ddisp;
struct trans_state *state;
START_PROFILE(SMBnttranss);
show_msg((const char *)req->inbuf);
/* Windows clients expect all replies to
an NT transact secondary (SMBnttranss 0xA1)
to have a command code of NT transact
(SMBnttrans 0xA0). See bug #8989 for details. */
req->cmd = SMBnttrans;
if (req->wct < 18) {
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
END_PROFILE(SMBnttranss);
return;
}
for (state = conn->pending_trans; state != NULL;
state = state->next) {
if (state->mid == req->mid) {
break;
}
}
if ((state == NULL) || (state->cmd != SMBnttrans)) {
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
END_PROFILE(SMBnttranss);
return;
}
/* Revise state->total_param and state->total_data in case they have
changed downwards */
if (IVAL(req->vwv+1, 1) < state->total_param) {
state->total_param = IVAL(req->vwv+1, 1);
}
if (IVAL(req->vwv+3, 1) < state->total_data) {
state->total_data = IVAL(req->vwv+3, 1);
}
pcnt = IVAL(req->vwv+5, 1);
poff = IVAL(req->vwv+7, 1);
pdisp = IVAL(req->vwv+9, 1);
dcnt = IVAL(req->vwv+11, 1);
doff = IVAL(req->vwv+13, 1);
ddisp = IVAL(req->vwv+15, 1);
state->received_param += pcnt;
state->received_data += dcnt;
if ((state->received_data > state->total_data) ||
(state->received_param > state->total_param))
goto bad_param;
if (pcnt) {
if (trans_oob(state->total_param, pdisp, pcnt)
|| trans_oob(smb_len(req->inbuf), poff, pcnt)) {
goto bad_param;
}
memcpy(state->param+pdisp, smb_base(req->inbuf)+poff,pcnt);
}
if (dcnt) {
if (trans_oob(state->total_data, ddisp, dcnt)
|| trans_oob(smb_len(req->inbuf), doff, dcnt)) {
goto bad_param;
}
memcpy(state->data+ddisp, smb_base(req->inbuf)+doff,dcnt);
}
if ((state->received_param < state->total_param) ||
(state->received_data < state->total_data)) {
END_PROFILE(SMBnttranss);
return;
}
handle_nttrans(conn, state, req);
DLIST_REMOVE(conn->pending_trans, state);
SAFE_FREE(state->data);
SAFE_FREE(state->param);
TALLOC_FREE(state);
END_PROFILE(SMBnttranss);
return;
bad_param:
DEBUG(0,("reply_nttranss: invalid trans parameters\n"));
DLIST_REMOVE(conn->pending_trans, state);
SAFE_FREE(state->data);
SAFE_FREE(state->param);
TALLOC_FREE(state);
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
END_PROFILE(SMBnttranss);
return;
}
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