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samba-mirror/source3/smbd/smb1_trans2.c
Ralph Boehme 78ef185afd smbd: add missing check for IPC share for TRANS2_GET_DFS_REFERRAL 
Cf MS-CIFS 3.3.5.58.11.

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2022-08-28 19:59:28 +00:00

3464 lines
89 KiB
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/*
Unix SMB/CIFS implementation.
SMB transaction2 handling
Copyright (C) Jeremy Allison 1994-2007
Copyright (C) Stefan (metze) Metzmacher 2003
Copyright (C) Volker Lendecke 2005-2007
Copyright (C) Steve French 2005
Copyright (C) James Peach 2006-2007
Extensively modified by Andrew Tridgell, 1995
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 "ntioctl.h"
#include "system/filesys.h"
#include "lib/util/time_basic.h"
#include "version.h"
#include "smbd/smbd.h"
#include "smbd/globals.h"
#include "../libcli/auth/libcli_auth.h"
#include "../librpc/gen_ndr/xattr.h"
#include "../librpc/gen_ndr/ndr_security.h"
#include "libcli/security/security.h"
#include "trans2.h"
#include "auth.h"
#include "smbprofile.h"
#include "rpc_server/srv_pipe_hnd.h"
#include "printing.h"
#include "lib/util_ea.h"
#include "lib/readdir_attr.h"
#include "messages.h"
#include "libcli/smb/smb2_posix.h"
#include "lib/util/string_wrappers.h"
#include "source3/lib/substitute.h"
#include "source3/lib/adouble.h"
#define DIR_ENTRY_SAFETY_MARGIN 4096
/****************************************************************************
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.
****************************************************************************/
void send_trans2_replies(connection_struct *conn,
struct smb_request *req,
NTSTATUS status,
const char *params,
int paramsize,
const char *pdata,
int datasize,
int max_data_bytes)
{
/* As we are using a protocol > LANMAN1 then the max_send
variable must have been set in the sessetupX call.
This takes precedence over the max_xmit field in the
global struct. These different max_xmit variables should
be merged as this is now too confusing */
int data_to_send = datasize;
int params_to_send = paramsize;
int useable_space;
const char *pp = params;
const char *pd = pdata;
int params_sent_thistime, data_sent_thistime, total_sent_thistime;
int alignment_offset = 1; /* JRA. This used to be 3. Set to 1 to make netmon parse ok. */
int data_alignment_offset = 0;
bool overflow = False;
struct smbXsrv_connection *xconn = req->xconn;
int max_send = xconn->smb1.sessions.max_send;
/* Modify the data_to_send and datasize and set the error if
we're trying to send more than max_data_bytes. We still send
the part of the packet(s) that fit. Strange, but needed
for OS/2. */
if (max_data_bytes > 0 && datasize > max_data_bytes) {
DEBUG(5,("send_trans2_replies: max_data_bytes %d exceeded by data %d\n",
max_data_bytes, datasize ));
datasize = data_to_send = max_data_bytes;
overflow = True;
}
/* 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_smb1_outbuf(req, 10, 0);
if (NT_STATUS_V(status)) {
uint8_t eclass;
uint32_t ecode;
ntstatus_to_dos(status, &eclass, &ecode);
error_packet_set((char *)req->outbuf,
eclass, ecode, status,
__LINE__,__FILE__);
}
show_msg((char *)req->outbuf);
if (!smb1_srv_send(xconn,
(char *)req->outbuf,
true, req->seqnum+1,
IS_CONN_ENCRYPTED(conn),
&req->pcd)) {
exit_server_cleanly("send_trans2_replies: smb1_srv_send 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 an even byte
boundary. NT 4.0 Beta needs this to work correctly. */
useable_space = max_send - (smb_size
+ 2 * 10 /* wct */
+ alignment_offset
+ data_alignment_offset);
if (useable_space < 0) {
DEBUG(0, ("send_trans2_replies failed sanity useable_space "
"= %d!!!", useable_space));
exit_server_cleanly("send_trans2_replies: Not enough space");
}
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 */
/*
* Note that 'useable_space' does not include the alignment offsets,
* but we must include the alignment offsets in the calculation of
* the length of the data we send over the wire, as the alignment offsets
* are sent here. Fix from Marc_Jacobsen@hp.com.
*/
total_sent_thistime = MIN(total_sent_thistime, useable_space);
reply_smb1_outbuf(req, 10, total_sent_thistime + alignment_offset
+ data_alignment_offset);
/* Set total params and data to be sent */
SSVAL(req->outbuf,smb_tprcnt,paramsize);
SSVAL(req->outbuf,smb_tdrcnt,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);
SSVAL(req->outbuf,smb_prcnt, params_sent_thistime);
/* smb_proff 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 */
SSVAL(req->outbuf,smb_proff,
((smb_buf(req->outbuf)+alignment_offset)
- smb_base(req->outbuf)));
if(params_sent_thistime == 0)
SSVAL(req->outbuf,smb_prdisp,0);
else
/* Absolute displacement of param bytes sent in this packet */
SSVAL(req->outbuf,smb_prdisp,pp - params);
SSVAL(req->outbuf,smb_drcnt, data_sent_thistime);
if(data_sent_thistime == 0) {
SSVAL(req->outbuf,smb_droff,0);
SSVAL(req->outbuf,smb_drdisp, 0);
} else {
/* The offset of the data bytes is the offset of the
parameter bytes plus the number of parameters being sent this time */
SSVAL(req->outbuf, smb_droff,
((smb_buf(req->outbuf)+alignment_offset)
- smb_base(req->outbuf))
+ params_sent_thistime + data_alignment_offset);
SSVAL(req->outbuf,smb_drdisp, pd - pdata);
}
/* Initialize the padding for alignment */
if (alignment_offset != 0) {
memset(smb_buf(req->outbuf), 0, alignment_offset);
}
/* Copy the param bytes into the packet */
if(params_sent_thistime) {
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,("t2_rep: params_sent_thistime = %d, data_sent_thistime = %d, useable_space = %d\n",
params_sent_thistime, data_sent_thistime, useable_space));
DEBUG(9,("t2_rep: params_to_send = %d, data_to_send = %d, paramsize = %d, datasize = %d\n",
params_to_send, data_to_send, paramsize, datasize));
if (overflow) {
error_packet_set((char *)req->outbuf,
ERRDOS,ERRbufferoverflow,
STATUS_BUFFER_OVERFLOW,
__LINE__,__FILE__);
} else if (NT_STATUS_V(status)) {
uint8_t eclass;
uint32_t ecode;
ntstatus_to_dos(status, &eclass, &ecode);
error_packet_set((char *)req->outbuf,
eclass, ecode, status,
__LINE__,__FILE__);
}
/* Send the packet */
show_msg((char *)req->outbuf);
if (!smb1_srv_send(xconn,
(char *)req->outbuf,
true, req->seqnum+1,
IS_CONN_ENCRYPTED(conn),
&req->pcd))
exit_server_cleanly("send_trans2_replies: smb1_srv_send 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_trans2_replies failed sanity check pts = %d, dts = %d\n!!!",
params_to_send, data_to_send));
return;
}
}
return;
}
/****************************************************************************
Deal with SMB_SET_POSIX_LOCK.
****************************************************************************/
static void smb_set_posix_lock_done(struct tevent_req *subreq);
NTSTATUS smb_set_posix_lock(connection_struct *conn,
struct smb_request *req,
const char *pdata,
int total_data,
files_struct *fsp)
{
struct tevent_req *subreq = NULL;
struct smbd_lock_element *lck = NULL;
uint64_t count;
uint64_t offset;
uint64_t smblctx;
bool blocking_lock = False;
enum brl_type lock_type;
NTSTATUS status = NT_STATUS_OK;
if (fsp == NULL ||
fsp->fsp_flags.is_pathref ||
fsp_get_io_fd(fsp) == -1)
{
return NT_STATUS_INVALID_HANDLE;
}
if (total_data != POSIX_LOCK_DATA_SIZE) {
return NT_STATUS_INVALID_PARAMETER;
}
switch (SVAL(pdata, POSIX_LOCK_TYPE_OFFSET)) {
case POSIX_LOCK_TYPE_READ:
lock_type = READ_LOCK;
break;
case POSIX_LOCK_TYPE_WRITE:
/* Return the right POSIX-mappable error code for files opened read-only. */
if (!fsp->fsp_flags.can_write) {
return NT_STATUS_INVALID_HANDLE;
}
lock_type = WRITE_LOCK;
break;
case POSIX_LOCK_TYPE_UNLOCK:
lock_type = UNLOCK_LOCK;
break;
default:
return NT_STATUS_INVALID_PARAMETER;
}
switch (SVAL(pdata, POSIX_LOCK_FLAGS_OFFSET)) {
case POSIX_LOCK_FLAG_NOWAIT:
blocking_lock = false;
break;
case POSIX_LOCK_FLAG_WAIT:
blocking_lock = true;
break;
default:
return NT_STATUS_INVALID_PARAMETER;
}
if (!lp_blocking_locks(SNUM(conn))) {
blocking_lock = False;
}
smblctx = (uint64_t)IVAL(pdata, POSIX_LOCK_PID_OFFSET);
offset = (((uint64_t) IVAL(pdata,(POSIX_LOCK_START_OFFSET+4))) << 32) |
((uint64_t) IVAL(pdata,POSIX_LOCK_START_OFFSET));
count = (((uint64_t) IVAL(pdata,(POSIX_LOCK_LEN_OFFSET+4))) << 32) |
((uint64_t) IVAL(pdata,POSIX_LOCK_LEN_OFFSET));
DBG_DEBUG("file %s, lock_type = %u, smblctx = %"PRIu64", "
"count = %"PRIu64", offset = %"PRIu64"\n",
fsp_str_dbg(fsp),
(unsigned int)lock_type,
smblctx,
count,
offset);
if (lock_type == UNLOCK_LOCK) {
struct smbd_lock_element l = {
.req_guid = smbd_request_guid(req, 0),
.smblctx = smblctx,
.brltype = UNLOCK_LOCK,
.lock_flav = POSIX_LOCK,
.offset = offset,
.count = count,
};
status = smbd_do_unlocking(req, fsp, 1, &l);
return status;
}
lck = talloc(req, struct smbd_lock_element);
if (lck == NULL) {
return NT_STATUS_NO_MEMORY;
}
*lck = (struct smbd_lock_element) {
.req_guid = smbd_request_guid(req, 0),
.smblctx = smblctx,
.brltype = lock_type,
.lock_flav = POSIX_LOCK,
.count = count,
.offset = offset,
};
subreq = smbd_smb1_do_locks_send(
fsp,
req->sconn->ev_ctx,
&req,
fsp,
blocking_lock ? UINT32_MAX : 0,
true, /* large_offset */
1,
lck);
if (subreq == NULL) {
TALLOC_FREE(lck);
return NT_STATUS_NO_MEMORY;
}
tevent_req_set_callback(subreq, smb_set_posix_lock_done, req);
return NT_STATUS_EVENT_PENDING;
}
static void smb_set_posix_lock_done(struct tevent_req *subreq)
{
struct smb_request *req = NULL;
NTSTATUS status;
bool ok;
ok = smbd_smb1_do_locks_extract_smbreq(subreq, talloc_tos(), &req);
SMB_ASSERT(ok);
status = smbd_smb1_do_locks_recv(subreq);
TALLOC_FREE(subreq);
if (NT_STATUS_IS_OK(status)) {
char params[2] = {0};
/* Fake up max_data_bytes here - we know it fits. */
send_trans2_replies(
req->conn,
req,
NT_STATUS_OK,
params,
2,
NULL,
0,
0xffff);
} else {
reply_nterror(req, status);
ok = smb1_srv_send(
req->xconn,
(char *)req->outbuf,
true,
req->seqnum+1,
IS_CONN_ENCRYPTED(req->conn),
NULL);
if (!ok) {
exit_server_cleanly("smb_set_posix_lock_done: "
"smb1_srv_send failed.");
}
}
TALLOC_FREE(req);
return;
}
/****************************************************************************
Read a list of EA names from an incoming data buffer. Create an ea_list with them.
****************************************************************************/
static struct ea_list *read_ea_name_list(TALLOC_CTX *ctx, const char *pdata, size_t data_size)
{
struct ea_list *ea_list_head = NULL;
size_t converted_size, offset = 0;
while (offset + 2 < data_size) {
struct ea_list *eal = talloc_zero(ctx, struct ea_list);
unsigned int namelen = CVAL(pdata,offset);
offset++; /* Go past the namelen byte. */
/* integer wrap paranioa. */
if ((offset + namelen < offset) || (offset + namelen < namelen) ||
(offset > data_size) || (namelen > data_size) ||
(offset + namelen >= data_size)) {
break;
}
/* Ensure the name is null terminated. */
if (pdata[offset + namelen] != '\0') {
return NULL;
}
if (!pull_ascii_talloc(ctx, &eal->ea.name, &pdata[offset],
&converted_size)) {
DEBUG(0,("read_ea_name_list: pull_ascii_talloc "
"failed: %s", strerror(errno)));
}
if (!eal->ea.name) {
return NULL;
}
offset += (namelen + 1); /* Go past the name + terminating zero. */
DLIST_ADD_END(ea_list_head, eal);
DEBUG(10,("read_ea_name_list: read ea name %s\n", eal->ea.name));
}
return ea_list_head;
}
/****************************************************************************
Reply to a TRANSACT2_OPEN.
****************************************************************************/
static void call_trans2open(connection_struct *conn,
struct smb_request *req,
char **pparams, int total_params,
char **ppdata, int total_data,
unsigned int max_data_bytes)
{
struct smb_filename *smb_fname = NULL;
char *params = *pparams;
char *pdata = *ppdata;
int deny_mode;
int32_t open_attr;
bool oplock_request;
#if 0
bool return_additional_info;
int16 open_sattr;
time_t open_time;
#endif
int open_ofun;
uint32_t open_size;
char *pname;
char *fname = NULL;
off_t size=0;
int fattr=0,mtime=0;
SMB_INO_T inode = 0;
int smb_action = 0;
struct files_struct *dirfsp = NULL;
files_struct *fsp;
struct ea_list *ea_list = NULL;
uint16_t flags = 0;
NTSTATUS status;
uint32_t access_mask;
uint32_t share_mode;
uint32_t create_disposition;
uint32_t create_options = 0;
uint32_t private_flags = 0;
NTTIME twrp = 0;
uint32_t ucf_flags = ucf_flags_from_smb_request(req);
TALLOC_CTX *ctx = talloc_tos();
/*
* Ensure we have enough parameters to perform the operation.
*/
if (total_params < 29) {
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
goto out;
}
flags = SVAL(params, 0);
deny_mode = SVAL(params, 2);
open_attr = SVAL(params,6);
oplock_request = (flags & REQUEST_OPLOCK) ? EXCLUSIVE_OPLOCK : 0;
if (oplock_request) {
oplock_request |= (flags & REQUEST_BATCH_OPLOCK) ? BATCH_OPLOCK : 0;
}
#if 0
return_additional_info = BITSETW(params,0);
open_sattr = SVAL(params, 4);
open_time = make_unix_date3(params+8);
#endif
open_ofun = SVAL(params,12);
open_size = IVAL(params,14);
pname = &params[28];
if (IS_IPC(conn)) {
reply_nterror(req, NT_STATUS_NETWORK_ACCESS_DENIED);
goto out;
}
if (req->posix_pathnames) {
srvstr_get_path_posix(ctx,
params,
req->flags2,
&fname,
pname,
total_params - 28,
STR_TERMINATE,
&status);
} else {
srvstr_get_path(ctx,
params,
req->flags2,
&fname,
pname,
total_params - 28,
STR_TERMINATE,
&status);
}
if (!NT_STATUS_IS_OK(status)) {
reply_nterror(req, status);
goto out;
}
DEBUG(3,("call_trans2open %s deny_mode=0x%x attr=%d ofun=0x%x size=%d\n",
fname, (unsigned int)deny_mode, (unsigned int)open_attr,
(unsigned int)open_ofun, open_size));
if (ucf_flags & UCF_GMT_PATHNAME) {
extract_snapshot_token(fname, &twrp);
}
status = filename_convert_dirfsp(ctx,
conn,
fname,
ucf_flags,
twrp,
&dirfsp,
&smb_fname);
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 (open_ofun == 0) {
reply_nterror(req, NT_STATUS_OBJECT_NAME_COLLISION);
goto out;
}
if (!map_open_params_to_ntcreate(smb_fname->base_name, deny_mode,
open_ofun,
&access_mask, &share_mode,
&create_disposition,
&create_options,
&private_flags)) {
reply_nterror(req, NT_STATUS_ACCESS_DENIED);
goto out;
}
/* Any data in this call is an EA list. */
if (total_data && (total_data != 4)) {
if (total_data < 10) {
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
goto out;
}
if (IVAL(pdata,0) > total_data) {
DEBUG(10,("call_trans2open: bad total data size (%u) > %u\n",
IVAL(pdata,0), (unsigned int)total_data));
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
goto out;
}
ea_list = read_ea_list(talloc_tos(), pdata + 4,
total_data - 4);
if (!ea_list) {
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
goto out;
}
if (!lp_ea_support(SNUM(conn))) {
reply_nterror(req, NT_STATUS_EAS_NOT_SUPPORTED);
goto out;
}
if (!req->posix_pathnames &&
ea_list_has_invalid_name(ea_list)) {
int param_len = 30;
*pparams = (char *)SMB_REALLOC(*pparams, param_len);
if(*pparams == NULL ) {
reply_nterror(req, NT_STATUS_NO_MEMORY);
goto out;
}
params = *pparams;
memset(params, '\0', param_len);
send_trans2_replies(conn, req, STATUS_INVALID_EA_NAME,
params, param_len, NULL, 0, max_data_bytes);
goto out;
}
}
status = SMB_VFS_CREATE_FILE(
conn, /* conn */
req, /* req */
dirfsp, /* dirfsp */
smb_fname, /* fname */
access_mask, /* access_mask */
share_mode, /* share_access */
create_disposition, /* create_disposition*/
create_options, /* create_options */
open_attr, /* file_attributes */
oplock_request, /* oplock_request */
NULL, /* lease */
open_size, /* allocation_size */
private_flags,
NULL, /* sd */
ea_list, /* ea_list */
&fsp, /* result */
&smb_action, /* psbuf */
NULL, NULL); /* create context */
if (!NT_STATUS_IS_OK(status)) {
if (open_was_deferred(req->xconn, req->mid)) {
/* We have re-scheduled this call. */
goto out;
}
if (!NT_STATUS_EQUAL(status, NT_STATUS_SHARING_VIOLATION)) {
reply_openerror(req, status);
goto out;
}
fsp = fcb_or_dos_open(
req,
smb_fname,
access_mask,
create_options,
private_flags);
if (fsp == NULL) {
bool ok = defer_smb1_sharing_violation(req);
if (ok) {
goto out;
}
reply_openerror(req, status);
goto out;
}
smb_action = FILE_WAS_OPENED;
}
size = get_file_size_stat(&smb_fname->st);
fattr = fdos_mode(fsp);
mtime = convert_timespec_to_time_t(smb_fname->st.st_ex_mtime);
inode = smb_fname->st.st_ex_ino;
if (fattr & FILE_ATTRIBUTE_DIRECTORY) {
close_file_free(req, &fsp, ERROR_CLOSE);
reply_nterror(req, NT_STATUS_ACCESS_DENIED);
goto out;
}
/* Realloc the size of parameters and data we will return */
*pparams = (char *)SMB_REALLOC(*pparams, 30);
if(*pparams == NULL ) {
reply_nterror(req, NT_STATUS_NO_MEMORY);
goto out;
}
params = *pparams;
SSVAL(params,0,fsp->fnum);
SSVAL(params,2,fattr);
srv_put_dos_date2(params,4, mtime);
SIVAL(params,8, (uint32_t)size);
SSVAL(params,12,deny_mode);
SSVAL(params,14,0); /* open_type - file or directory. */
SSVAL(params,16,0); /* open_state - only valid for IPC device. */
if (oplock_request && lp_fake_oplocks(SNUM(conn))) {
smb_action |= EXTENDED_OPLOCK_GRANTED;
}
SSVAL(params,18,smb_action);
/*
* WARNING - this may need to be changed if SMB_INO_T <> 4 bytes.
*/
SIVAL(params,20,inode);
SSVAL(params,24,0); /* Padding. */
if (flags & 8) {
uint32_t ea_size = estimate_ea_size(smb_fname->fsp);
SIVAL(params, 26, ea_size);
} else {
SIVAL(params, 26, 0);
}
/* Send the required number of replies */
send_trans2_replies(conn, req, NT_STATUS_OK, params, 30, *ppdata, 0, max_data_bytes);
out:
TALLOC_FREE(smb_fname);
}
static NTSTATUS get_lanman2_dir_entry(TALLOC_CTX *ctx,
connection_struct *conn,
struct dptr_struct *dirptr,
uint16_t flags2,
const char *path_mask,
uint32_t dirtype,
int info_level,
bool requires_resume_key,
bool dont_descend,
bool ask_sharemode,
char **ppdata,
char *base_data,
char *end_data,
int space_remaining,
bool *got_exact_match,
int *last_entry_off,
struct ea_list *name_list)
{
uint8_t align = 4;
const bool do_pad = true;
if (info_level >= 1 && info_level <= 3) {
/* No alignment on earlier info levels. */
align = 1;
}
return smbd_dirptr_lanman2_entry(ctx, conn, dirptr, flags2,
path_mask, dirtype, info_level,
requires_resume_key, dont_descend, ask_sharemode,
true, align, do_pad,
ppdata, base_data, end_data,
space_remaining,
NULL,
got_exact_match,
last_entry_off, name_list, NULL);
}
/****************************************************************************
Reply to a TRANS2_FINDFIRST.
****************************************************************************/
static void call_trans2findfirst(connection_struct *conn,
struct smb_request *req,
char **pparams, int total_params,
char **ppdata, int total_data,
unsigned int max_data_bytes)
{
/* We must be careful here that we don't return more than the
allowed number of data bytes. If this means returning fewer than
maxentries then so be it. We assume that the redirector has
enough room for the fixed number of parameter bytes it has
requested. */
struct smb_filename *smb_dname = NULL;
char *params = *pparams;
char *pdata = *ppdata;
char *data_end;
uint32_t dirtype;
int maxentries;
uint16_t findfirst_flags;
bool close_after_first;
bool close_if_end;
bool requires_resume_key;
int info_level;
char *directory = NULL;
char *mask = NULL;
char *p;
int last_entry_off=0;
int dptr_num = -1;
int numentries = 0;
int i;
bool finished = False;
bool dont_descend = False;
bool out_of_space = False;
int space_remaining;
struct ea_list *ea_list = NULL;
NTSTATUS ntstatus = NT_STATUS_OK;
bool ask_sharemode = lp_smbd_search_ask_sharemode(SNUM(conn));
struct smbd_server_connection *sconn = req->sconn;
uint32_t ucf_flags = ucf_flags_from_smb_request(req);
bool backup_priv = false;
bool as_root = false;
files_struct *fsp = NULL;
struct files_struct *dirfsp = NULL;
const struct loadparm_substitution *lp_sub =
loadparm_s3_global_substitution();
if (total_params < 13) {
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
goto out;
}
dirtype = SVAL(params,0);
maxentries = SVAL(params,2);
findfirst_flags = SVAL(params,4);
close_after_first = (findfirst_flags & FLAG_TRANS2_FIND_CLOSE);
close_if_end = (findfirst_flags & FLAG_TRANS2_FIND_CLOSE_IF_END);
requires_resume_key = (findfirst_flags & FLAG_TRANS2_FIND_REQUIRE_RESUME);
backup_priv = ((findfirst_flags & FLAG_TRANS2_FIND_BACKUP_INTENT) &&
security_token_has_privilege(get_current_nttok(conn),
SEC_PRIV_BACKUP));
info_level = SVAL(params,6);
DBG_NOTICE("dirtype = %"PRIx32", maxentries = %d, "
"close_after_first=%d, close_if_end = %d "
"requires_resume_key = %d backup_priv = %d level = 0x%x, "
"max_data_bytes = %d\n",
dirtype,
maxentries,
close_after_first,
close_if_end,
requires_resume_key,
backup_priv,
info_level,
max_data_bytes);
if (!maxentries) {
/* W2K3 seems to treat zero as 1. */
maxentries = 1;
}
switch (info_level) {
case SMB_FIND_INFO_STANDARD:
case SMB_FIND_EA_SIZE:
case SMB_FIND_EA_LIST:
case SMB_FIND_FILE_DIRECTORY_INFO:
case SMB_FIND_FILE_FULL_DIRECTORY_INFO:
case SMB_FIND_FILE_NAMES_INFO:
case SMB_FIND_FILE_BOTH_DIRECTORY_INFO:
case SMB_FIND_ID_FULL_DIRECTORY_INFO:
case SMB_FIND_ID_BOTH_DIRECTORY_INFO:
break;
case SMB_FIND_FILE_UNIX:
case SMB_FIND_FILE_UNIX_INFO2:
if (!lp_smb1_unix_extensions()) {
reply_nterror(req, NT_STATUS_INVALID_LEVEL);
goto out;
}
if (!req->posix_pathnames) {
reply_nterror(req, NT_STATUS_INVALID_LEVEL);
goto out;
}
break;
default:
reply_nterror(req, NT_STATUS_INVALID_LEVEL);
goto out;
}
if (req->posix_pathnames) {
/* Always use filesystem for UNIX mtime query. */
ask_sharemode = false;
}
if (req->posix_pathnames) {
srvstr_get_path_posix(talloc_tos(),
params,
req->flags2,
&directory,
params+12,
total_params - 12,
STR_TERMINATE,
&ntstatus);
} else {
srvstr_get_path(talloc_tos(),
params,
req->flags2,
&directory,
params+12,
total_params - 12,
STR_TERMINATE,
&ntstatus);
}
if (!NT_STATUS_IS_OK(ntstatus)) {
reply_nterror(req, ntstatus);
goto out;
}
if (backup_priv) {
become_root();
as_root = true;
}
ntstatus = filename_convert_smb1_search_path(talloc_tos(),
conn,
directory,
ucf_flags,
&dirfsp,
&smb_dname,
&mask);
if (!NT_STATUS_IS_OK(ntstatus)) {
if (NT_STATUS_EQUAL(ntstatus,NT_STATUS_PATH_NOT_COVERED)) {
reply_botherror(req, NT_STATUS_PATH_NOT_COVERED,
ERRSRV, ERRbadpath);
goto out;
}
reply_nterror(req, ntstatus);
goto out;
}
TALLOC_FREE(directory);
directory = smb_dname->base_name;
DEBUG(5,("dir=%s, mask = %s\n",directory, mask));
if (info_level == SMB_FIND_EA_LIST) {
uint32_t ea_size;
if (total_data < 4) {
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
goto out;
}
ea_size = IVAL(pdata,0);
if (ea_size != total_data) {
DEBUG(4,("call_trans2findfirst: Rejecting EA request with incorrect \
total_data=%u (should be %u)\n", (unsigned int)total_data, (unsigned int)IVAL(pdata,0) ));
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
goto out;
}
if (!lp_ea_support(SNUM(conn))) {
reply_nterror(req, NT_STATUS_EAS_NOT_SUPPORTED);
goto out;
}
/* Pull out the list of names. */
ea_list = read_ea_name_list(talloc_tos(), pdata + 4, ea_size - 4);
if (!ea_list) {
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
goto out;
}
}
if (max_data_bytes + DIR_ENTRY_SAFETY_MARGIN < max_data_bytes) {
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
goto out;
}
*ppdata = (char *)SMB_REALLOC(
*ppdata, max_data_bytes + DIR_ENTRY_SAFETY_MARGIN);
if(*ppdata == NULL ) {
reply_nterror(req, NT_STATUS_NO_MEMORY);
goto out;
}
pdata = *ppdata;
data_end = pdata + max_data_bytes + DIR_ENTRY_SAFETY_MARGIN - 1;
/*
* squash valgrind "writev(vector[...]) points to uninitialised byte(s)"
* error.
*/
memset(pdata + total_data, 0, ((max_data_bytes + DIR_ENTRY_SAFETY_MARGIN) - total_data));
/* Realloc the params space */
*pparams = (char *)SMB_REALLOC(*pparams, 10);
if (*pparams == NULL) {
reply_nterror(req, NT_STATUS_NO_MEMORY);
goto out;
}
params = *pparams;
/*
* Open an fsp on this directory for the dptr.
*/
ntstatus = SMB_VFS_CREATE_FILE(
conn, /* conn */
req, /* req */
dirfsp, /* dirfsp */
smb_dname, /* dname */
FILE_LIST_DIRECTORY, /* access_mask */
FILE_SHARE_READ|
FILE_SHARE_WRITE, /* share_access */
FILE_OPEN, /* create_disposition*/
FILE_DIRECTORY_FILE, /* create_options */
FILE_ATTRIBUTE_DIRECTORY,/* file_attributes */
NO_OPLOCK, /* oplock_request */
NULL, /* lease */
0, /* allocation_size */
0, /* private_flags */
NULL, /* sd */
NULL, /* ea_list */
&fsp, /* result */
NULL, /* pinfo */
NULL, /* in_context */
NULL);/* out_context */
if (!NT_STATUS_IS_OK(ntstatus)) {
DBG_ERR("failed to open directory %s\n",
smb_fname_str_dbg(smb_dname));
reply_nterror(req, ntstatus);
goto out;
}
/* Save the wildcard match and attribs we are using on this directory -
needed as lanman2 assumes these are being saved between calls */
ntstatus = dptr_create(conn,
req,
fsp, /* fsp */
False,
True,
req->smbpid,
mask,
dirtype,
&fsp->dptr);
if (!NT_STATUS_IS_OK(ntstatus)) {
/*
* Use NULL here for the first parameter (req)
* as this is not a client visible handle so
* can'tbe part of an SMB1 chain.
*/
close_file_free(NULL, &fsp, NORMAL_CLOSE);
reply_nterror(req, ntstatus);
goto out;
}
if (backup_priv) {
/* Remember this in case we have
to do a findnext. */
dptr_set_priv(fsp->dptr);
}
dptr_num = dptr_dnum(fsp->dptr);
DEBUG(4,("dptr_num is %d, wcard = %s, attr = %d\n", dptr_num, mask, dirtype));
/* We don't need to check for VOL here as this is returned by
a different TRANS2 call. */
DEBUG(8,("dirpath=<%s> dontdescend=<%s>\n",
directory,lp_dont_descend(talloc_tos(), lp_sub, SNUM(conn))));
if (in_list(directory,
lp_dont_descend(talloc_tos(), lp_sub, SNUM(conn)),
dptr_case_sensitive(fsp->dptr))) {
dont_descend = True;
}
p = pdata;
space_remaining = max_data_bytes;
out_of_space = False;
for (i=0;(i<maxentries) && !finished && !out_of_space;i++) {
bool got_exact_match = False;
/* this is a heuristic to avoid seeking the dirptr except when
absolutely necessary. It allows for a filename of about 40 chars */
if (space_remaining < DIRLEN_GUESS && numentries > 0) {
out_of_space = True;
finished = False;
} else {
ntstatus = get_lanman2_dir_entry(talloc_tos(),
conn,
fsp->dptr,
req->flags2,
mask,dirtype,info_level,
requires_resume_key,dont_descend,
ask_sharemode,
&p,pdata,data_end,
space_remaining,
&got_exact_match,
&last_entry_off, ea_list);
if (NT_STATUS_EQUAL(ntstatus,
NT_STATUS_ILLEGAL_CHARACTER)) {
/*
* Bad character conversion on name. Ignore this
* entry.
*/
continue;
}
if (NT_STATUS_EQUAL(ntstatus, STATUS_MORE_ENTRIES)) {
out_of_space = true;
} else {
finished = !NT_STATUS_IS_OK(ntstatus);
}
}
if (!finished && !out_of_space)
numentries++;
/*
* As an optimisation if we know we aren't looking
* for a wildcard name (ie. the name matches the wildcard exactly)
* then we can finish on any (first) match.
* This speeds up large directory searches. JRA.
*/
if(got_exact_match)
finished = True;
/* Ensure space_remaining never goes -ve. */
if (PTR_DIFF(p,pdata) > max_data_bytes) {
space_remaining = 0;
out_of_space = true;
} else {
space_remaining = max_data_bytes - PTR_DIFF(p,pdata);
}
}
/* Check if we can close the dirptr */
if(close_after_first || (finished && close_if_end)) {
DEBUG(5,("call_trans2findfirst - (2) closing dptr_num %d\n", dptr_num));
dptr_num = -1;
close_file_free(NULL, &fsp, NORMAL_CLOSE);
}
/*
* If there are no matching entries we must return ERRDOS/ERRbadfile -
* from observation of NT. NB. This changes to ERRDOS,ERRnofiles if
* the protocol level is less than NT1. Tested with smbclient. JRA.
* This should fix the OS/2 client bug #2335.
*/
if(numentries == 0) {
dptr_num = -1;
/*
* We may have already closed the file in the
* close_after_first or finished case above.
*/
if (fsp != NULL) {
close_file_free(NULL, &fsp, NORMAL_CLOSE);
}
if (get_Protocol() < PROTOCOL_NT1) {
reply_force_doserror(req, ERRDOS, ERRnofiles);
goto out;
} else {
reply_botherror(req, NT_STATUS_NO_SUCH_FILE,
ERRDOS, ERRbadfile);
goto out;
}
}
/* At this point pdata points to numentries directory entries. */
/* Set up the return parameter block */
SSVAL(params,0,dptr_num);
SSVAL(params,2,numentries);
SSVAL(params,4,finished);
SSVAL(params,6,0); /* Never an EA error */
SSVAL(params,8,last_entry_off);
send_trans2_replies(conn, req, NT_STATUS_OK, params, 10, pdata, PTR_DIFF(p,pdata),
max_data_bytes);
if ((! *directory) && dptr_path(sconn, dptr_num)) {
directory = talloc_strdup(talloc_tos(),dptr_path(sconn, dptr_num));
if (!directory) {
reply_nterror(req, NT_STATUS_NO_MEMORY);
}
}
DEBUG( 4, ( "%s mask=%s directory=%s dirtype=%d numentries=%d\n",
smb_fn_name(req->cmd),
mask, directory, dirtype, numentries ) );
/*
* Force a name mangle here to ensure that the
* mask as an 8.3 name is top of the mangled cache.
* The reasons for this are subtle. Don't remove
* this code unless you know what you are doing
* (see PR#13758). JRA.
*/
if(!mangle_is_8_3_wildcards( mask, False, conn->params)) {
char mangled_name[13];
name_to_8_3(mask, mangled_name, True, conn->params);
}
out:
if (as_root) {
unbecome_root();
}
TALLOC_FREE(smb_dname);
return;
}
/****************************************************************************
Reply to a TRANS2_FINDNEXT.
****************************************************************************/
static void call_trans2findnext(connection_struct *conn,
struct smb_request *req,
char **pparams, int total_params,
char **ppdata, int total_data,
unsigned int max_data_bytes)
{
/* We must be careful here that we don't return more than the
allowed number of data bytes. If this means returning fewer than
maxentries then so be it. We assume that the redirector has
enough room for the fixed number of parameter bytes it has
requested. */
char *params = *pparams;
char *pdata = *ppdata;
char *data_end;
int dptr_num;
int maxentries;
uint16_t info_level;
uint32_t resume_key;
uint16_t findnext_flags;
bool close_after_request;
bool close_if_end;
bool requires_resume_key;
bool continue_bit;
char *resume_name = NULL;
const char *mask = NULL;
const char *directory = NULL;
char *p = NULL;
uint16_t dirtype;
int numentries = 0;
int i, last_entry_off=0;
bool finished = False;
bool dont_descend = False;
bool out_of_space = False;
int space_remaining;
struct ea_list *ea_list = NULL;
NTSTATUS ntstatus = NT_STATUS_OK;
bool ask_sharemode = lp_smbd_search_ask_sharemode(SNUM(conn));
TALLOC_CTX *ctx = talloc_tos();
struct smbd_server_connection *sconn = req->sconn;
bool backup_priv = false;
bool as_root = false;
files_struct *fsp = NULL;
const struct loadparm_substitution *lp_sub =
loadparm_s3_global_substitution();
if (total_params < 13) {
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
return;
}
dptr_num = SVAL(params,0);
maxentries = SVAL(params,2);
info_level = SVAL(params,4);
resume_key = IVAL(params,6);
findnext_flags = SVAL(params,10);
close_after_request = (findnext_flags & FLAG_TRANS2_FIND_CLOSE);
close_if_end = (findnext_flags & FLAG_TRANS2_FIND_CLOSE_IF_END);
requires_resume_key = (findnext_flags & FLAG_TRANS2_FIND_REQUIRE_RESUME);
continue_bit = (findnext_flags & FLAG_TRANS2_FIND_CONTINUE);
if (!continue_bit) {
/* We only need resume_name if continue_bit is zero. */
if (req->posix_pathnames) {
srvstr_get_path_posix(ctx,
params,
req->flags2,
&resume_name,
params+12,
total_params - 12,
STR_TERMINATE,
&ntstatus);
} else {
srvstr_get_path(ctx,
params,
req->flags2,
&resume_name,
params+12,
total_params - 12,
STR_TERMINATE,
&ntstatus);
}
if (!NT_STATUS_IS_OK(ntstatus)) {
/* Win9x or OS/2 can send a resume name of ".." or ".". This will cause the parser to
complain (it thinks we're asking for the directory above the shared
path or an invalid name). Catch this as the resume name is only compared, never used in
a file access. JRA. */
srvstr_pull_talloc(ctx, params, req->flags2,
&resume_name, params+12,
total_params - 12,
STR_TERMINATE);
if (!resume_name || !(ISDOT(resume_name) || ISDOTDOT(resume_name))) {
reply_nterror(req, ntstatus);
return;
}
}
}
DEBUG(3,("call_trans2findnext: dirhandle = %d, max_data_bytes = %d, maxentries = %d, \
close_after_request=%d, close_if_end = %d requires_resume_key = %d \
resume_key = %d resume name = %s continue=%d level = %d\n",
dptr_num, max_data_bytes, maxentries, close_after_request, close_if_end,
requires_resume_key, resume_key,
resume_name ? resume_name : "(NULL)", continue_bit, info_level));
if (!maxentries) {
/* W2K3 seems to treat zero as 1. */
maxentries = 1;
}
switch (info_level) {
case SMB_FIND_INFO_STANDARD:
case SMB_FIND_EA_SIZE:
case SMB_FIND_EA_LIST:
case SMB_FIND_FILE_DIRECTORY_INFO:
case SMB_FIND_FILE_FULL_DIRECTORY_INFO:
case SMB_FIND_FILE_NAMES_INFO:
case SMB_FIND_FILE_BOTH_DIRECTORY_INFO:
case SMB_FIND_ID_FULL_DIRECTORY_INFO:
case SMB_FIND_ID_BOTH_DIRECTORY_INFO:
break;
case SMB_FIND_FILE_UNIX:
case SMB_FIND_FILE_UNIX_INFO2:
/* Always use filesystem for UNIX mtime query. */
ask_sharemode = false;
if (!lp_smb1_unix_extensions()) {
reply_nterror(req, NT_STATUS_INVALID_LEVEL);
return;
}
if (!req->posix_pathnames) {
reply_nterror(req, NT_STATUS_INVALID_LEVEL);
return;
}
break;
default:
reply_nterror(req, NT_STATUS_INVALID_LEVEL);
return;
}
if (info_level == SMB_FIND_EA_LIST) {
uint32_t ea_size;
if (total_data < 4) {
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
return;
}
ea_size = IVAL(pdata,0);
if (ea_size != total_data) {
DEBUG(4,("call_trans2findnext: Rejecting EA request with incorrect \
total_data=%u (should be %u)\n", (unsigned int)total_data, (unsigned int)IVAL(pdata,0) ));
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
return;
}
if (!lp_ea_support(SNUM(conn))) {
reply_nterror(req, NT_STATUS_EAS_NOT_SUPPORTED);
return;
}
/* Pull out the list of names. */
ea_list = read_ea_name_list(ctx, pdata + 4, ea_size - 4);
if (!ea_list) {
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
return;
}
}
if (max_data_bytes + DIR_ENTRY_SAFETY_MARGIN < max_data_bytes) {
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
return;
}
*ppdata = (char *)SMB_REALLOC(
*ppdata, max_data_bytes + DIR_ENTRY_SAFETY_MARGIN);
if(*ppdata == NULL) {
reply_nterror(req, NT_STATUS_NO_MEMORY);
return;
}
pdata = *ppdata;
data_end = pdata + max_data_bytes + DIR_ENTRY_SAFETY_MARGIN - 1;
/*
* squash valgrind "writev(vector[...]) points to uninitialised byte(s)"
* error.
*/
memset(pdata + total_data, 0, (max_data_bytes + DIR_ENTRY_SAFETY_MARGIN) - total_data);
/* Realloc the params space */
*pparams = (char *)SMB_REALLOC(*pparams, 6*SIZEOFWORD);
if(*pparams == NULL ) {
reply_nterror(req, NT_STATUS_NO_MEMORY);
return;
}
params = *pparams;
/* Check that the dptr is valid */
fsp = dptr_fetch_lanman2_fsp(sconn, dptr_num);
if (fsp == NULL) {
reply_nterror(req, STATUS_NO_MORE_FILES);
return;
}
directory = dptr_path(sconn, dptr_num);
/* Get the wildcard mask from the dptr */
if((mask = dptr_wcard(sconn, dptr_num))== NULL) {
DEBUG(2,("dptr_num %d has no wildcard\n", dptr_num));
reply_nterror(req, STATUS_NO_MORE_FILES);
return;
}
/* Get the attr mask from the dptr */
dirtype = dptr_attr(sconn, dptr_num);
backup_priv = dptr_get_priv(fsp->dptr);
DEBUG(3,("dptr_num is %d, mask = %s, attr = %x, dirptr=(0x%lX,%ld) "
"backup_priv = %d\n",
dptr_num, mask, dirtype,
(long)fsp->dptr,
dptr_TellDir(fsp->dptr),
(int)backup_priv));
/* We don't need to check for VOL here as this is returned by
a different TRANS2 call. */
DEBUG(8,("dirpath=<%s> dontdescend=<%s>\n",
directory,lp_dont_descend(ctx, lp_sub, SNUM(conn))));
if (in_list(directory,lp_dont_descend(ctx, lp_sub, SNUM(conn)),
dptr_case_sensitive(fsp->dptr)))
dont_descend = True;
p = pdata;
space_remaining = max_data_bytes;
out_of_space = False;
if (backup_priv) {
become_root();
as_root = true;
}
/*
* Seek to the correct position. We no longer use the resume key but
* depend on the last file name instead.
*/
if(!continue_bit && resume_name && *resume_name) {
SMB_STRUCT_STAT st;
bool posix_open = (fsp->posix_flags & FSP_POSIX_FLAGS_OPEN);
long current_pos = 0;
/*
* Remember, name_to_8_3 is called by
* get_lanman2_dir_entry(), so the resume name
* could be mangled. Ensure we check the unmangled name.
*/
if (!posix_open &&
mangle_is_mangled(resume_name, conn->params)) {
char *new_resume_name = NULL;
mangle_lookup_name_from_8_3(ctx,
resume_name,
&new_resume_name,
conn->params);
if (new_resume_name) {
resume_name = new_resume_name;
}
}
/*
* Fix for NT redirector problem triggered by resume key indexes
* changing between directory scans. We now return a resume key of 0
* and instead look for the filename to continue from (also given
* to us by NT/95/smbfs/smbclient). If no other scans have been done between the
* findfirst/findnext (as is usual) then the directory pointer
* should already be at the correct place.
*/
finished = !dptr_SearchDir(fsp->dptr, resume_name, &current_pos, &st);
} /* end if resume_name && !continue_bit */
for (i=0;(i<(int)maxentries) && !finished && !out_of_space ;i++) {
bool got_exact_match = False;
/* this is a heuristic to avoid seeking the fsp->dptr except when
absolutely necessary. It allows for a filename of about 40 chars */
if (space_remaining < DIRLEN_GUESS && numentries > 0) {
out_of_space = True;
finished = False;
} else {
ntstatus = get_lanman2_dir_entry(ctx,
conn,
fsp->dptr,
req->flags2,
mask,dirtype,info_level,
requires_resume_key,dont_descend,
ask_sharemode,
&p,pdata,data_end,
space_remaining,
&got_exact_match,
&last_entry_off, ea_list);
if (NT_STATUS_EQUAL(ntstatus,
NT_STATUS_ILLEGAL_CHARACTER)) {
/*
* Bad character conversion on name. Ignore this
* entry.
*/
continue;
}
if (NT_STATUS_EQUAL(ntstatus, STATUS_MORE_ENTRIES)) {
out_of_space = true;
} else {
finished = !NT_STATUS_IS_OK(ntstatus);
}
}
if (!finished && !out_of_space)
numentries++;
/*
* As an optimisation if we know we aren't looking
* for a wildcard name (ie. the name matches the wildcard exactly)
* then we can finish on any (first) match.
* This speeds up large directory searches. JRA.
*/
if(got_exact_match)
finished = True;
space_remaining = max_data_bytes - PTR_DIFF(p,pdata);
}
DEBUG( 3, ( "%s mask=%s directory=%s dirtype=%d numentries=%d\n",
smb_fn_name(req->cmd),
mask, directory, dirtype, numentries ) );
/* Check if we can close the fsp->dptr */
if(close_after_request || (finished && close_if_end)) {
DEBUG(5,("call_trans2findnext: closing dptr_num = %d\n", dptr_num));
dptr_num = -1;
close_file_free(NULL, &fsp, NORMAL_CLOSE);
}
if (as_root) {
unbecome_root();
}
/* Set up the return parameter block */
SSVAL(params,0,numentries);
SSVAL(params,2,finished);
SSVAL(params,4,0); /* Never an EA error */
SSVAL(params,6,last_entry_off);
send_trans2_replies(conn, req, NT_STATUS_OK, params, 8, pdata, PTR_DIFF(p,pdata),
max_data_bytes);
return;
}
/****************************************************************************
Reply to a TRANS2_QFSINFO (query filesystem info).
****************************************************************************/
static void call_trans2qfsinfo(connection_struct *conn,
struct smb_request *req,
char **pparams, int total_params,
char **ppdata, int total_data,
unsigned int max_data_bytes)
{
char *params = *pparams;
uint16_t info_level;
int data_len = 0;
size_t fixed_portion;
NTSTATUS status;
if (total_params < 2) {
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
return;
}
info_level = SVAL(params,0);
if (ENCRYPTION_REQUIRED(conn) && !req->encrypted) {
if (info_level != SMB_QUERY_CIFS_UNIX_INFO) {
DEBUG(0,("call_trans2qfsinfo: encryption required "
"and info level 0x%x sent.\n",
(unsigned int)info_level));
reply_nterror(req, NT_STATUS_ACCESS_DENIED);
return;
}
}
DEBUG(3,("call_trans2qfsinfo: level = %d\n", info_level));
status = smbd_do_qfsinfo(req->xconn, conn, req,
info_level,
req->flags2,
max_data_bytes,
&fixed_portion,
NULL,
ppdata, &data_len);
if (!NT_STATUS_IS_OK(status)) {
reply_nterror(req, status);
return;
}
send_trans2_replies(conn, req, NT_STATUS_OK, params, 0, *ppdata, data_len,
max_data_bytes);
DEBUG( 4, ( "%s info_level = %d\n",
smb_fn_name(req->cmd), info_level) );
return;
}
/****************************************************************************
Reply to a TRANS2_SETFSINFO (set filesystem info).
****************************************************************************/
static void call_trans2setfsinfo(connection_struct *conn,
struct smb_request *req,
char **pparams, int total_params,
char **ppdata, int total_data,
unsigned int max_data_bytes)
{
const struct loadparm_substitution *lp_sub =
loadparm_s3_global_substitution();
struct smbXsrv_connection *xconn = req->xconn;
char *pdata = *ppdata;
char *params = *pparams;
uint16_t info_level;
DEBUG(10,("call_trans2setfsinfo: for service [%s]\n",
lp_servicename(talloc_tos(), lp_sub, SNUM(conn))));
/* */
if (total_params < 4) {
DEBUG(0,("call_trans2setfsinfo: requires total_params(%d) >= 4 bytes!\n",
total_params));
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
return;
}
info_level = SVAL(params,2);
if (IS_IPC(conn)) {
if (info_level != SMB_REQUEST_TRANSPORT_ENCRYPTION &&
info_level != SMB_SET_CIFS_UNIX_INFO) {
DEBUG(0,("call_trans2setfsinfo: not an allowed "
"info level (0x%x) on IPC$.\n",
(unsigned int)info_level));
reply_nterror(req, NT_STATUS_ACCESS_DENIED);
return;
}
}
if (ENCRYPTION_REQUIRED(conn) && !req->encrypted) {
if (info_level != SMB_REQUEST_TRANSPORT_ENCRYPTION) {
DEBUG(0,("call_trans2setfsinfo: encryption required "
"and info level 0x%x sent.\n",
(unsigned int)info_level));
reply_nterror(req, NT_STATUS_ACCESS_DENIED);
return;
}
}
switch(info_level) {
case SMB_SET_CIFS_UNIX_INFO:
if (!lp_smb1_unix_extensions()) {
DEBUG(2,("call_trans2setfsinfo: "
"SMB_SET_CIFS_UNIX_INFO is invalid with "
"unix extensions off\n"));
reply_nterror(req,
NT_STATUS_INVALID_LEVEL);
return;
}
/* There should be 12 bytes of capabilities set. */
if (total_data < 12) {
reply_nterror(
req,
NT_STATUS_INVALID_PARAMETER);
return;
}
xconn->smb1.unix_info.client_major = SVAL(pdata,0);
xconn->smb1.unix_info.client_minor = SVAL(pdata,2);
xconn->smb1.unix_info.client_cap_low = IVAL(pdata,4);
xconn->smb1.unix_info.client_cap_high = IVAL(pdata,8);
/* Just print these values for now. */
DEBUG(10, ("call_trans2setfsinfo: set unix_info info. "
"major = %u, minor = %u cap_low = 0x%x, "
"cap_high = 0x%xn",
(unsigned int)xconn->
smb1.unix_info.client_major,
(unsigned int)xconn->
smb1.unix_info.client_minor,
(unsigned int)xconn->
smb1.unix_info.client_cap_low,
(unsigned int)xconn->
smb1.unix_info.client_cap_high));
/* Here is where we must switch to posix pathname processing... */
if (xconn->smb1.unix_info.client_cap_low & CIFS_UNIX_POSIX_PATHNAMES_CAP) {
lp_set_posix_pathnames();
mangle_change_to_posix();
}
if ((xconn->smb1.unix_info.client_cap_low & CIFS_UNIX_FCNTL_LOCKS_CAP) &&
!(xconn->smb1.unix_info.client_cap_low & CIFS_UNIX_POSIX_PATH_OPERATIONS_CAP)) {
/* Client that knows how to do posix locks,
* but not posix open/mkdir operations. Set a
* default type for read/write checks. */
lp_set_posix_default_cifsx_readwrite_locktype(POSIX_LOCK);
}
break;
case SMB_REQUEST_TRANSPORT_ENCRYPTION:
{
NTSTATUS status;
size_t param_len = 0;
size_t data_len = total_data;
if (!lp_smb1_unix_extensions()) {
reply_nterror(
req,
NT_STATUS_INVALID_LEVEL);
return;
}
if (lp_server_smb_encrypt(SNUM(conn)) ==
SMB_ENCRYPTION_OFF) {
reply_nterror(
req,
NT_STATUS_NOT_SUPPORTED);
return;
}
if (xconn->smb1.echo_handler.trusted_fde) {
DEBUG( 2,("call_trans2setfsinfo: "
"request transport encryption disabled"
"with 'fork echo handler = yes'\n"));
reply_nterror(
req,
NT_STATUS_NOT_SUPPORTED);
return;
}
DEBUG( 4,("call_trans2setfsinfo: "
"request transport encryption.\n"));
status = srv_request_encryption_setup(conn,
(unsigned char **)ppdata,
&data_len,
(unsigned char **)pparams,
&param_len);
if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED) &&
!NT_STATUS_IS_OK(status)) {
reply_nterror(req, status);
return;
}
send_trans2_replies(conn, req,
NT_STATUS_OK,
*pparams,
param_len,
*ppdata,
data_len,
max_data_bytes);
if (NT_STATUS_IS_OK(status)) {
/* Server-side transport
* encryption is now *on*. */
status = srv_encryption_start(conn);
if (!NT_STATUS_IS_OK(status)) {
char *reason = talloc_asprintf(talloc_tos(),
"Failure in setting "
"up encrypted transport: %s",
nt_errstr(status));
exit_server_cleanly(reason);
}
}
return;
}
case SMB_FS_QUOTA_INFORMATION:
{
NTSTATUS status;
DATA_BLOB qdata = {
.data = (uint8_t *)pdata,
.length = total_data
};
files_struct *fsp = NULL;
fsp = file_fsp(req, SVAL(params,0));
status = smb_set_fsquota(conn,
req,
fsp,
&qdata);
if (!NT_STATUS_IS_OK(status)) {
reply_nterror(req, status);
return;
}
break;
}
default:
DEBUG(3,("call_trans2setfsinfo: unknown level (0x%X) not implemented yet.\n",
info_level));
reply_nterror(req, NT_STATUS_INVALID_LEVEL);
return;
break;
}
/*
* sending this reply works fine,
* but I'm not sure it's the same
* like windows do...
* --metze
*/
reply_smb1_outbuf(req, 10, 0);
}
/****************************************************************************
Reply to a TRANSACT2_QFILEINFO on a PIPE !
****************************************************************************/
static void call_trans2qpipeinfo(connection_struct *conn,
struct smb_request *req,
files_struct *fsp,
uint16_t info_level,
unsigned int tran_call,
char **pparams, int total_params,
char **ppdata, int total_data,
unsigned int max_data_bytes)
{
char *params = *pparams;
char *pdata = *ppdata;
unsigned int data_size = 0;
unsigned int param_size = 2;
if (!fsp_is_np(fsp)) {
reply_nterror(req, NT_STATUS_INVALID_HANDLE);
return;
}
*pparams = (char *)SMB_REALLOC(*pparams,2);
if (*pparams == NULL) {
reply_nterror(req, NT_STATUS_NO_MEMORY);
return;
}
params = *pparams;
SSVAL(params,0,0);
if (max_data_bytes + DIR_ENTRY_SAFETY_MARGIN < max_data_bytes) {
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
return;
}
data_size = max_data_bytes + DIR_ENTRY_SAFETY_MARGIN;
*ppdata = (char *)SMB_REALLOC(*ppdata, data_size);
if (*ppdata == NULL ) {
reply_nterror(req, NT_STATUS_NO_MEMORY);
return;
}
pdata = *ppdata;
switch (info_level) {
case SMB_FILE_STANDARD_INFORMATION:
memset(pdata,0,24);
SOFF_T(pdata,0,4096LL);
SIVAL(pdata,16,1);
SIVAL(pdata,20,1);
data_size = 24;
break;
default:
reply_nterror(req, NT_STATUS_INVALID_LEVEL);
return;
}
send_trans2_replies(conn, req, NT_STATUS_OK, params, param_size, *ppdata, data_size,
max_data_bytes);
return;
}
/****************************************************************************
Reply to a TRANS2_QFILEPATHINFO or TRANSACT2_QFILEINFO (query file info by
file name or file id).
****************************************************************************/
static void call_trans2qfilepathinfo(connection_struct *conn,
struct smb_request *req,
unsigned int tran_call,
char **pparams, int total_params,
char **ppdata, int total_data,
unsigned int max_data_bytes)
{
char *params = *pparams;
char *pdata = *ppdata;
uint16_t info_level;
unsigned int data_size = 0;
unsigned int param_size = 2;
struct smb_filename *smb_fname = NULL;
bool delete_pending = False;
struct timespec write_time_ts;
struct files_struct *dirfsp = NULL;
files_struct *fsp = NULL;
struct file_id fileid;
struct ea_list *ea_list = NULL;
int lock_data_count = 0;
char *lock_data = NULL;
size_t fixed_portion;
NTSTATUS status = NT_STATUS_OK;
int ret;
if (!params) {
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
return;
}
ZERO_STRUCT(write_time_ts);
if (tran_call == TRANSACT2_QFILEINFO) {
if (total_params < 4) {
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
return;
}
fsp = file_fsp(req, SVAL(params,0));
info_level = SVAL(params,2);
if (IS_IPC(conn)) {
call_trans2qpipeinfo(
conn,
req,
fsp,
info_level,
tran_call,
pparams,
total_params,
ppdata,
total_data,
max_data_bytes);
return;
}
DEBUG(3,("call_trans2qfilepathinfo: TRANSACT2_QFILEINFO: level = %d\n", info_level));
if (INFO_LEVEL_IS_UNIX(info_level)) {
if (!lp_smb1_unix_extensions()) {
reply_nterror(req, NT_STATUS_INVALID_LEVEL);
return;
}
if (!req->posix_pathnames) {
reply_nterror(req, NT_STATUS_INVALID_LEVEL);
return;
}
}
/* Initial check for valid fsp ptr. */
if (!check_fsp_open(conn, req, fsp)) {
return;
}
smb_fname = fsp->fsp_name;
if(fsp->fake_file_handle) {
/*
* This is actually for the QUOTA_FAKE_FILE --metze
*/
/* We know this name is ok, it's already passed the checks. */
} else if(fsp_get_pathref_fd(fsp) == -1) {
/*
* This is actually a QFILEINFO on a directory
* handle (returned from an NT SMB). NT5.0 seems
* to do this call. JRA.
*/
ret = vfs_stat(conn, smb_fname);
if (ret != 0) {
DBG_NOTICE("vfs_stat of %s failed (%s)\n",
smb_fname_str_dbg(smb_fname),
strerror(errno));
reply_nterror(req,
map_nt_error_from_unix(errno));
return;
}
if (lp_smbd_getinfo_ask_sharemode(SNUM(conn))) {
fileid = vfs_file_id_from_sbuf(
conn, &smb_fname->st);
get_file_infos(fileid, fsp->name_hash,
&delete_pending,
&write_time_ts);
}
} else {
/*
* Original code - this is an open file.
*/
status = vfs_stat_fsp(fsp);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(3, ("fstat of %s failed (%s)\n",
fsp_fnum_dbg(fsp), nt_errstr(status)));
reply_nterror(req, status);
return;
}
if (lp_smbd_getinfo_ask_sharemode(SNUM(conn))) {
fileid = vfs_file_id_from_sbuf(
conn, &smb_fname->st);
get_file_infos(fileid, fsp->name_hash,
&delete_pending,
&write_time_ts);
}
}
} else {
uint32_t name_hash;
char *fname = NULL;
uint32_t ucf_flags = ucf_flags_from_smb_request(req);
NTTIME twrp = 0;
/* qpathinfo */
if (total_params < 7) {
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
return;
}
info_level = SVAL(params,0);
DEBUG(3,("call_trans2qfilepathinfo: TRANSACT2_QPATHINFO: level = %d\n", info_level));
if (INFO_LEVEL_IS_UNIX(info_level)) {
if (!lp_smb1_unix_extensions()) {
reply_nterror(req, NT_STATUS_INVALID_LEVEL);
return;
}
if (!req->posix_pathnames) {
reply_nterror(req, NT_STATUS_INVALID_LEVEL);
return;
}
}
if (req->posix_pathnames) {
srvstr_get_path_posix(req,
params,
req->flags2,
&fname,
&params[6],
total_params - 6,
STR_TERMINATE,
&status);
} else {
srvstr_get_path(req,
params,
req->flags2,
&fname,
&params[6],
total_params - 6,
STR_TERMINATE,
&status);
}
if (!NT_STATUS_IS_OK(status)) {
reply_nterror(req, status);
return;
}
if (ucf_flags & UCF_GMT_PATHNAME) {
extract_snapshot_token(fname, &twrp);
}
status = filename_convert_dirfsp(req,
conn,
fname,
ucf_flags,
twrp,
&dirfsp,
&smb_fname);
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);
return;
}
reply_nterror(req, status);
return;
}
/*
* qpathinfo must operate on an existing file, so we
* can exit early if filename_convert_dirfsp() returned the
* "new file" NT_STATUS_OK, !VALID_STAT case.
*/
if (!VALID_STAT(smb_fname->st)) {
reply_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
return;
}
/*
* smb_fname->fsp may be NULL if smb_fname points at a symlink
* and we're in POSIX context, so be careful when using fsp
* below, it can still be NULL.
*/
fsp = smb_fname->fsp;
/* If this is a stream, check if there is a delete_pending. */
if ((conn->fs_capabilities & FILE_NAMED_STREAMS)
&& is_ntfs_stream_smb_fname(smb_fname)) {
struct smb_filename *smb_fname_base;
/* Create an smb_filename with stream_name == NULL. */
smb_fname_base = synthetic_smb_fname(
talloc_tos(),
smb_fname->base_name,
NULL,
NULL,
smb_fname->twrp,
smb_fname->flags);
if (smb_fname_base == NULL) {
reply_nterror(req, NT_STATUS_NO_MEMORY);
return;
}
ret = vfs_stat(conn, smb_fname_base);
if (ret != 0) {
DBG_NOTICE("vfs_stat of %s failed "
"(%s)\n",
smb_fname_str_dbg(smb_fname_base),
strerror(errno));
TALLOC_FREE(smb_fname_base);
reply_nterror(req,
map_nt_error_from_unix(errno));
return;
}
status = file_name_hash(conn,
smb_fname_str_dbg(smb_fname_base),
&name_hash);
if (!NT_STATUS_IS_OK(status)) {
TALLOC_FREE(smb_fname_base);
reply_nterror(req, status);
return;
}
fileid = vfs_file_id_from_sbuf(conn,
&smb_fname_base->st);
TALLOC_FREE(smb_fname_base);
get_file_infos(fileid, name_hash, &delete_pending, NULL);
if (delete_pending) {
reply_nterror(req, NT_STATUS_DELETE_PENDING);
return;
}
}
status = file_name_hash(conn,
smb_fname_str_dbg(smb_fname),
&name_hash);
if (!NT_STATUS_IS_OK(status)) {
reply_nterror(req, status);
return;
}
if (lp_smbd_getinfo_ask_sharemode(SNUM(conn))) {
fileid = vfs_file_id_from_sbuf(conn, &smb_fname->st);
get_file_infos(fileid, name_hash, &delete_pending,
&write_time_ts);
}
if (delete_pending) {
reply_nterror(req, NT_STATUS_DELETE_PENDING);
return;
}
}
DEBUG(3,("call_trans2qfilepathinfo %s (%s) level=%d call=%d "
"total_data=%d\n", smb_fname_str_dbg(smb_fname),
fsp_fnum_dbg(fsp),
info_level,tran_call,total_data));
/* Pull out any data sent here before we realloc. */
switch (info_level) {
case SMB_INFO_QUERY_EAS_FROM_LIST:
{
/* Pull any EA list from the data portion. */
uint32_t ea_size;
if (total_data < 4) {
reply_nterror(
req, NT_STATUS_INVALID_PARAMETER);
return;
}
ea_size = IVAL(pdata,0);
if (total_data > 0 && ea_size != total_data) {
DEBUG(4,("call_trans2qfilepathinfo: Rejecting EA request with incorrect \
total_data=%u (should be %u)\n", (unsigned int)total_data, (unsigned int)IVAL(pdata,0) ));
reply_nterror(
req, NT_STATUS_INVALID_PARAMETER);
return;
}
if (!lp_ea_support(SNUM(conn))) {
reply_nterror(req, NT_STATUS_EAS_NOT_SUPPORTED);
return;
}
/* Pull out the list of names. */
ea_list = read_ea_name_list(req, pdata + 4, ea_size - 4);
if (!ea_list) {
reply_nterror(
req, NT_STATUS_INVALID_PARAMETER);
return;
}
break;
}
case SMB_QUERY_POSIX_LOCK:
{
if (fsp == NULL ||
fsp->fsp_flags.is_pathref ||
fsp_get_io_fd(fsp) == -1)
{
reply_nterror(req, NT_STATUS_INVALID_HANDLE);
return;
}
if (total_data != POSIX_LOCK_DATA_SIZE) {
reply_nterror(
req, NT_STATUS_INVALID_PARAMETER);
return;
}
/* Copy the lock range data. */
lock_data = (char *)talloc_memdup(
req, pdata, total_data);
if (!lock_data) {
reply_nterror(req, NT_STATUS_NO_MEMORY);
return;
}
lock_data_count = total_data;
break;
}
default:
break;
}
*pparams = (char *)SMB_REALLOC(*pparams,2);
if (*pparams == NULL) {
reply_nterror(req, NT_STATUS_NO_MEMORY);
return;
}
params = *pparams;
SSVAL(params,0,0);
/*
* draft-leach-cifs-v1-spec-02.txt
* 4.2.14 TRANS2_QUERY_PATH_INFORMATION: Get File Attributes given Path
* says:
*
* The requested information is placed in the Data portion of the
* transaction response. For the information levels greater than 0x100,
* the transaction response has 1 parameter word which should be
* ignored by the client.
*
* However Windows only follows this rule for the IS_NAME_VALID call.
*/
switch (info_level) {
case SMB_INFO_IS_NAME_VALID:
param_size = 0;
break;
}
if ((info_level & SMB2_INFO_SPECIAL) == SMB2_INFO_SPECIAL) {
/*
* We use levels that start with 0xFF00
* internally to represent SMB2 specific levels
*/
reply_nterror(req, NT_STATUS_INVALID_LEVEL);
return;
}
status = smbd_do_qfilepathinfo(conn, req, req, info_level,
fsp, smb_fname,
delete_pending, write_time_ts,
ea_list,
lock_data_count, lock_data,
req->flags2, max_data_bytes,
&fixed_portion,
ppdata, &data_size);
if (!NT_STATUS_IS_OK(status)) {
if (open_was_deferred(req->xconn, req->mid)) {
/* We have re-scheduled this call. */
return;
}
if (NT_STATUS_EQUAL(status, NT_STATUS_SHARING_VIOLATION)) {
bool ok = defer_smb1_sharing_violation(req);
if (ok) {
return;
}
}
reply_nterror(req, status);
return;
}
if (fixed_portion > max_data_bytes) {
reply_nterror(req, NT_STATUS_INFO_LENGTH_MISMATCH);
return;
}
send_trans2_replies(conn, req, NT_STATUS_OK, params, param_size, *ppdata, data_size,
max_data_bytes);
return;
}
/****************************************************************************
Reply to a TRANS2_SETFILEINFO (set file info by fileid or pathname).
****************************************************************************/
static void call_trans2setfilepathinfo(connection_struct *conn,
struct smb_request *req,
unsigned int tran_call,
char **pparams, int total_params,
char **ppdata, int total_data,
unsigned int max_data_bytes)
{
char *params = *pparams;
char *pdata = *ppdata;
uint16_t info_level;
struct smb_filename *smb_fname = NULL;
struct files_struct *dirfsp = NULL;
files_struct *fsp = NULL;
NTSTATUS status = NT_STATUS_OK;
int data_return_size = 0;
int ret;
if (!params) {
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
return;
}
if (tran_call == TRANSACT2_SETFILEINFO) {
if (total_params < 4) {
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
return;
}
fsp = file_fsp(req, SVAL(params,0));
/* Basic check for non-null fsp. */
if (!check_fsp_open(conn, req, fsp)) {
return;
}
info_level = SVAL(params,2);
if (INFO_LEVEL_IS_UNIX(info_level)) {
if (!lp_smb1_unix_extensions()) {
reply_nterror(req, NT_STATUS_INVALID_LEVEL);
return;
}
if (!req->posix_pathnames) {
reply_nterror(req, NT_STATUS_INVALID_LEVEL);
return;
}
}
smb_fname = fsp->fsp_name;
if (fsp_get_pathref_fd(fsp) == -1) {
/*
* This is actually a SETFILEINFO on a directory
* handle (returned from an NT SMB). NT5.0 seems
* to do this call. JRA.
*/
ret = vfs_stat(conn, smb_fname);
if (ret != 0) {
DBG_NOTICE("vfs_stat of %s failed (%s)\n",
smb_fname_str_dbg(smb_fname),
strerror(errno));
reply_nterror(req,
map_nt_error_from_unix(errno));
return;
}
} else if (fsp->print_file) {
/*
* Doing a DELETE_ON_CLOSE should cancel a print job.
*/
if ((info_level == SMB_SET_FILE_DISPOSITION_INFO) && CVAL(pdata,0)) {
fsp->fsp_flags.delete_on_close = true;
DEBUG(3,("call_trans2setfilepathinfo: "
"Cancelling print job (%s)\n",
fsp_str_dbg(fsp)));
SSVAL(params,0,0);
send_trans2_replies(conn, req, NT_STATUS_OK, params, 2,
*ppdata, 0,
max_data_bytes);
return;
} else {
reply_nterror(req,
NT_STATUS_OBJECT_PATH_NOT_FOUND);
return;
}
} else {
/*
* Original code - this is an open file.
*/
status = vfs_stat_fsp(fsp);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(3,("call_trans2setfilepathinfo: fstat "
"of %s failed (%s)\n", fsp_fnum_dbg(fsp),
nt_errstr(status)));
reply_nterror(req, status);
return;
}
}
} else {
char *fname = NULL;
uint32_t ucf_flags = ucf_flags_from_smb_request(req);
bool require_existing_object = true;
NTTIME twrp = 0;
/* set path info */
if (total_params < 7) {
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
return;
}
info_level = SVAL(params,0);
if (INFO_LEVEL_IS_UNIX(info_level)) {
if (!lp_smb1_unix_extensions()) {
reply_nterror(req, NT_STATUS_INVALID_LEVEL);
return;
}
if (!req->posix_pathnames) {
reply_nterror(req, NT_STATUS_INVALID_LEVEL);
return;
}
}
if (req->posix_pathnames) {
srvstr_get_path_posix(req,
params,
req->flags2,
&fname,
&params[6],
total_params - 6,
STR_TERMINATE,
&status);
} else {
srvstr_get_path(req,
params,
req->flags2,
&fname,
&params[6],
total_params - 6,
STR_TERMINATE,
&status);
}
if (!NT_STATUS_IS_OK(status)) {
reply_nterror(req, status);
return;
}
if (ucf_flags & UCF_GMT_PATHNAME) {
extract_snapshot_token(fname, &twrp);
}
status = filename_convert_dirfsp(req,
conn,
fname,
ucf_flags,
twrp,
&dirfsp,
&smb_fname);
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);
return;
}
reply_nterror(req, status);
return;
}
/*
* smb_fname->fsp may be NULL if smb_fname points at a symlink
* and we're in POSIX context, so be careful when using fsp
* below, it can still be NULL.
*/
fsp = smb_fname->fsp;
/*
* There are 4 info levels which can
* create a new object in the filesystem.
* They are:
* SMB_SET_FILE_UNIX_LINK -> creates POSIX symlink.
* SMB_POSIX_PATH_OPEN -> creates POSIX file or directory.
* SMB_SET_FILE_UNIX_BASIC:
* SMB_SET_FILE_UNIX_INFO2: can create a POSIX special file.
*
* These info levels do not require an existing object.
*/
switch (info_level) {
case SMB_SET_FILE_UNIX_LINK:
case SMB_POSIX_PATH_OPEN:
case SMB_SET_FILE_UNIX_BASIC:
case SMB_SET_FILE_UNIX_INFO2:
require_existing_object = false;
break;
default:
break;
}
if (!VALID_STAT(smb_fname->st) && require_existing_object) {
reply_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
}
}
DEBUG(3,("call_trans2setfilepathinfo(%d) %s (%s) info_level=%d "
"totdata=%d\n", tran_call, smb_fname_str_dbg(smb_fname),
fsp_fnum_dbg(fsp),
info_level,total_data));
/* Realloc the parameter size */
*pparams = (char *)SMB_REALLOC(*pparams,2);
if (*pparams == NULL) {
reply_nterror(req, NT_STATUS_NO_MEMORY);
return;
}
params = *pparams;
SSVAL(params,0,0);
status = smbd_do_setfilepathinfo(conn, req, req,
info_level,
fsp,
smb_fname,
ppdata, total_data,
&data_return_size);
if (!NT_STATUS_IS_OK(status)) {
if (open_was_deferred(req->xconn, req->mid)) {
/* We have re-scheduled this call. */
return;
}
if (NT_STATUS_EQUAL(status, NT_STATUS_SHARING_VIOLATION)) {
bool ok = defer_smb1_sharing_violation(req);
if (ok) {
return;
}
}
if (NT_STATUS_EQUAL(status, NT_STATUS_EVENT_PENDING)) {
/* We have re-scheduled this call. */
return;
}
if (NT_STATUS_EQUAL(status,NT_STATUS_PATH_NOT_COVERED)) {
reply_botherror(req, NT_STATUS_PATH_NOT_COVERED,
ERRSRV, ERRbadpath);
return;
}
if (info_level == SMB_POSIX_PATH_OPEN) {
reply_openerror(req, status);
return;
}
/*
* Invalid EA name needs to return 2 param bytes,
* not a zero-length error packet.
*/
if (NT_STATUS_EQUAL(status, STATUS_INVALID_EA_NAME)) {
send_trans2_replies(conn, req, status, params, 2, NULL, 0,
max_data_bytes);
} else {
reply_nterror(req, status);
}
return;
}
send_trans2_replies(conn, req, NT_STATUS_OK, params, 2, *ppdata, data_return_size,
max_data_bytes);
return;
}
/****************************************************************************
Reply to a TRANS2_MKDIR (make directory with extended attributes).
****************************************************************************/
static void call_trans2mkdir(connection_struct *conn, struct smb_request *req,
char **pparams, int total_params,
char **ppdata, int total_data,
unsigned int max_data_bytes)
{
struct files_struct *dirfsp = NULL;
struct files_struct *fsp = NULL;
struct smb_filename *smb_dname = NULL;
char *params = *pparams;
char *pdata = *ppdata;
char *directory = NULL;
NTSTATUS status = NT_STATUS_OK;
struct ea_list *ea_list = NULL;
uint32_t ucf_flags = ucf_flags_from_smb_request(req);
NTTIME twrp = 0;
TALLOC_CTX *ctx = talloc_tos();
if (!CAN_WRITE(conn)) {
reply_nterror(req, NT_STATUS_ACCESS_DENIED);
return;
}
if (total_params < 5) {
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
return;
}
if (req->posix_pathnames) {
srvstr_get_path_posix(ctx,
params,
req->flags2,
&directory,
&params[4],
total_params - 4,
STR_TERMINATE,
&status);
} else {
srvstr_get_path(ctx,
params,
req->flags2,
&directory,
&params[4],
total_params - 4,
STR_TERMINATE,
&status);
}
if (!NT_STATUS_IS_OK(status)) {
reply_nterror(req, status);
return;
}
DEBUG(3,("call_trans2mkdir : name = %s\n", directory));
if (ucf_flags & UCF_GMT_PATHNAME) {
extract_snapshot_token(directory, &twrp);
}
status = filename_convert_dirfsp(ctx,
conn,
directory,
ucf_flags,
twrp,
&dirfsp,
&smb_dname);
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);
return;
}
reply_nterror(req, status);
return;
}
/*
* OS/2 workplace shell seems to send SET_EA requests of "null"
* length (4 bytes containing IVAL 4).
* They seem to have no effect. Bug #3212. JRA.
*/
if (total_data && (total_data != 4)) {
/* Any data in this call is an EA list. */
if (total_data < 10) {
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
goto out;
}
if (IVAL(pdata,0) > total_data) {
DEBUG(10,("call_trans2mkdir: bad total data size (%u) > %u\n",
IVAL(pdata,0), (unsigned int)total_data));
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
goto out;
}
ea_list = read_ea_list(talloc_tos(), pdata + 4,
total_data - 4);
if (!ea_list) {
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
goto out;
}
if (!lp_ea_support(SNUM(conn))) {
reply_nterror(req, NT_STATUS_EAS_NOT_SUPPORTED);
goto out;
}
}
/* If total_data == 4 Windows doesn't care what values
* are placed in that field, it just ignores them.
* The System i QNTC IBM SMB client puts bad values here,
* so ignore them. */
status = SMB_VFS_CREATE_FILE(
conn, /* conn */
req, /* req */
dirfsp, /* dirfsp */
smb_dname, /* fname */
MAXIMUM_ALLOWED_ACCESS, /* access_mask */
FILE_SHARE_NONE, /* share_access */
FILE_CREATE, /* create_disposition*/
FILE_DIRECTORY_FILE, /* create_options */
FILE_ATTRIBUTE_DIRECTORY, /* file_attributes */
0, /* oplock_request */
NULL, /* lease */
0, /* allocation_size */
0, /* private_flags */
NULL, /* sd */
NULL, /* ea_list */
&fsp, /* result */
NULL, /* pinfo */
NULL, NULL); /* create context */
if (!NT_STATUS_IS_OK(status)) {
reply_nterror(req, status);
goto out;
}
/* Try and set any given EA. */
if (ea_list) {
status = set_ea(conn, fsp, ea_list);
if (!NT_STATUS_IS_OK(status)) {
reply_nterror(req, status);
goto out;
}
}
/* Realloc the parameter and data sizes */
*pparams = (char *)SMB_REALLOC(*pparams,2);
if(*pparams == NULL) {
reply_nterror(req, NT_STATUS_NO_MEMORY);
goto out;
}
params = *pparams;
SSVAL(params,0,0);
send_trans2_replies(conn, req, NT_STATUS_OK, params, 2, *ppdata, 0, max_data_bytes);
out:
if (fsp != NULL) {
close_file_free(NULL, &fsp, NORMAL_CLOSE);
}
TALLOC_FREE(smb_dname);
return;
}
/****************************************************************************
Reply to a TRANS2_FINDNOTIFYFIRST (start monitoring a directory for changes).
We don't actually do this - we just send a null response.
****************************************************************************/
static void call_trans2findnotifyfirst(connection_struct *conn,
struct smb_request *req,
char **pparams, int total_params,
char **ppdata, int total_data,
unsigned int max_data_bytes)
{
char *params = *pparams;
uint16_t info_level;
if (total_params < 6) {
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
return;
}
info_level = SVAL(params,4);
DEBUG(3,("call_trans2findnotifyfirst - info_level %d\n", info_level));
switch (info_level) {
case 1:
case 2:
break;
default:
reply_nterror(req, NT_STATUS_INVALID_LEVEL);
return;
}
/* Realloc the parameter and data sizes */
*pparams = (char *)SMB_REALLOC(*pparams,6);
if (*pparams == NULL) {
reply_nterror(req, NT_STATUS_NO_MEMORY);
return;
}
params = *pparams;
SSVAL(params,0,fnf_handle);
SSVAL(params,2,0); /* No changes */
SSVAL(params,4,0); /* No EA errors */
fnf_handle++;
if(fnf_handle == 0)
fnf_handle = 257;
send_trans2_replies(conn, req, NT_STATUS_OK, params, 6, *ppdata, 0, max_data_bytes);
return;
}
/****************************************************************************
Reply to a TRANS2_FINDNOTIFYNEXT (continue monitoring a directory for
changes). Currently this does nothing.
****************************************************************************/
static void call_trans2findnotifynext(connection_struct *conn,
struct smb_request *req,
char **pparams, int total_params,
char **ppdata, int total_data,
unsigned int max_data_bytes)
{
char *params = *pparams;
DEBUG(3,("call_trans2findnotifynext\n"));
/* Realloc the parameter and data sizes */
*pparams = (char *)SMB_REALLOC(*pparams,4);
if (*pparams == NULL) {
reply_nterror(req, NT_STATUS_NO_MEMORY);
return;
}
params = *pparams;
SSVAL(params,0,0); /* No changes */
SSVAL(params,2,0); /* No EA errors */
send_trans2_replies(conn, req, NT_STATUS_OK, params, 4, *ppdata, 0, max_data_bytes);
return;
}
/****************************************************************************
Reply to a TRANS2_GET_DFS_REFERRAL - Shirish Kalele <kalele@veritas.com>.
****************************************************************************/
static void call_trans2getdfsreferral(connection_struct *conn,
struct smb_request *req,
char **pparams, int total_params,
char **ppdata, int total_data,
unsigned int max_data_bytes)
{
char *params = *pparams;
char *pathname = NULL;
int reply_size = 0;
int max_referral_level;
NTSTATUS status = NT_STATUS_OK;
TALLOC_CTX *ctx = talloc_tos();
DEBUG(10,("call_trans2getdfsreferral\n"));
if (!IS_IPC(conn)) {
reply_nterror(req, NT_STATUS_ACCESS_DENIED);
return;
}
if (total_params < 3) {
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
return;
}
max_referral_level = SVAL(params,0);
if(!lp_host_msdfs()) {
reply_nterror(req, NT_STATUS_NOT_IMPLEMENTED);
return;
}
srvstr_pull_talloc(ctx, params, req->flags2, &pathname, &params[2],
total_params - 2, STR_TERMINATE);
if (!pathname) {
reply_nterror(req, NT_STATUS_NOT_FOUND);
return;
}
reply_size = setup_dfs_referral(
conn, pathname, max_referral_level, ppdata, &status);
if (reply_size < 0) {
reply_nterror(req, status);
return;
}
SSVAL((discard_const_p(uint8_t, req->inbuf)), smb_flg2,
SVAL(req->inbuf,smb_flg2) | FLAGS2_DFS_PATHNAMES);
send_trans2_replies(conn, req, NT_STATUS_OK, 0,0,*ppdata,reply_size, max_data_bytes);
return;
}
#define LMCAT_SPL 0x53
#define LMFUNC_GETJOBID 0x60
/****************************************************************************
Reply to a TRANS2_IOCTL - used for OS/2 printing.
****************************************************************************/
static void call_trans2ioctl(connection_struct *conn,
struct smb_request *req,
char **pparams, int total_params,
char **ppdata, int total_data,
unsigned int max_data_bytes)
{
const struct loadparm_substitution *lp_sub =
loadparm_s3_global_substitution();
char *pdata = *ppdata;
files_struct *fsp = file_fsp(req, SVAL(req->vwv+15, 0));
NTSTATUS status;
size_t len = 0;
/* check for an invalid fid before proceeding */
if (!fsp) {
reply_nterror(req, NT_STATUS_INVALID_HANDLE);
return;
}
if ((SVAL(req->vwv+16, 0) == LMCAT_SPL)
&& (SVAL(req->vwv+17, 0) == LMFUNC_GETJOBID)) {
*ppdata = (char *)SMB_REALLOC(*ppdata, 32);
if (*ppdata == NULL) {
reply_nterror(req, NT_STATUS_NO_MEMORY);
return;
}
pdata = *ppdata;
/* NOTE - THIS IS ASCII ONLY AT THE MOMENT - NOT SURE IF OS/2
CAN ACCEPT THIS IN UNICODE. JRA. */
/* Job number */
SSVAL(pdata, 0, print_spool_rap_jobid(fsp->print_file));
status = srvstr_push(pdata, req->flags2, pdata + 2,
lp_netbios_name(), 15,
STR_ASCII|STR_TERMINATE, &len); /* Our NetBIOS name */
if (!NT_STATUS_IS_OK(status)) {
reply_nterror(req, status);
return;
}
status = srvstr_push(pdata, req->flags2, pdata+18,
lp_servicename(talloc_tos(), lp_sub, SNUM(conn)), 13,
STR_ASCII|STR_TERMINATE, &len); /* Service name */
if (!NT_STATUS_IS_OK(status)) {
reply_nterror(req, status);
return;
}
send_trans2_replies(conn, req, NT_STATUS_OK, *pparams, 0, *ppdata, 32,
max_data_bytes);
return;
}
DEBUG(2,("Unknown TRANS2_IOCTL\n"));
reply_nterror(req, NT_STATUS_NOT_IMPLEMENTED);
}
static void handle_trans2(connection_struct *conn, struct smb_request *req,
struct trans_state *state)
{
if (get_Protocol() >= PROTOCOL_NT1) {
req->flags2 |= 0x40; /* IS_LONG_NAME */
SSVAL((discard_const_p(uint8_t, req->inbuf)),smb_flg2,req->flags2);
}
if (ENCRYPTION_REQUIRED(conn) && !req->encrypted) {
if (state->call != TRANSACT2_QFSINFO &&
state->call != TRANSACT2_SETFSINFO) {
DEBUG(0,("handle_trans2: encryption required "
"with call 0x%x\n",
(unsigned int)state->call));
reply_nterror(req, NT_STATUS_ACCESS_DENIED);
return;
}
}
SMB_PERFCOUNT_SET_SUBOP(&req->pcd, state->call);
/* Now we must call the relevant TRANS2 function */
switch(state->call) {
case TRANSACT2_OPEN:
{
START_PROFILE(Trans2_open);
call_trans2open(conn, req,
&state->param, state->total_param,
&state->data, state->total_data,
state->max_data_return);
END_PROFILE(Trans2_open);
break;
}
case TRANSACT2_FINDFIRST:
{
START_PROFILE(Trans2_findfirst);
call_trans2findfirst(conn, req,
&state->param, state->total_param,
&state->data, state->total_data,
state->max_data_return);
END_PROFILE(Trans2_findfirst);
break;
}
case TRANSACT2_FINDNEXT:
{
START_PROFILE(Trans2_findnext);
call_trans2findnext(conn, req,
&state->param, state->total_param,
&state->data, state->total_data,
state->max_data_return);
END_PROFILE(Trans2_findnext);
break;
}
case TRANSACT2_QFSINFO:
{
START_PROFILE(Trans2_qfsinfo);
call_trans2qfsinfo(conn, req,
&state->param, state->total_param,
&state->data, state->total_data,
state->max_data_return);
END_PROFILE(Trans2_qfsinfo);
break;
}
case TRANSACT2_SETFSINFO:
{
START_PROFILE(Trans2_setfsinfo);
call_trans2setfsinfo(conn, req,
&state->param, state->total_param,
&state->data, state->total_data,
state->max_data_return);
END_PROFILE(Trans2_setfsinfo);
break;
}
case TRANSACT2_QPATHINFO:
case TRANSACT2_QFILEINFO:
{
START_PROFILE(Trans2_qpathinfo);
call_trans2qfilepathinfo(conn, req, state->call,
&state->param, state->total_param,
&state->data, state->total_data,
state->max_data_return);
END_PROFILE(Trans2_qpathinfo);
break;
}
case TRANSACT2_SETPATHINFO:
case TRANSACT2_SETFILEINFO:
{
START_PROFILE(Trans2_setpathinfo);
call_trans2setfilepathinfo(conn, req, state->call,
&state->param, state->total_param,
&state->data, state->total_data,
state->max_data_return);
END_PROFILE(Trans2_setpathinfo);
break;
}
case TRANSACT2_FINDNOTIFYFIRST:
{
START_PROFILE(Trans2_findnotifyfirst);
call_trans2findnotifyfirst(conn, req,
&state->param, state->total_param,
&state->data, state->total_data,
state->max_data_return);
END_PROFILE(Trans2_findnotifyfirst);
break;
}
case TRANSACT2_FINDNOTIFYNEXT:
{
START_PROFILE(Trans2_findnotifynext);
call_trans2findnotifynext(conn, req,
&state->param, state->total_param,
&state->data, state->total_data,
state->max_data_return);
END_PROFILE(Trans2_findnotifynext);
break;
}
case TRANSACT2_MKDIR:
{
START_PROFILE(Trans2_mkdir);
call_trans2mkdir(conn, req,
&state->param, state->total_param,
&state->data, state->total_data,
state->max_data_return);
END_PROFILE(Trans2_mkdir);
break;
}
case TRANSACT2_GET_DFS_REFERRAL:
{
START_PROFILE(Trans2_get_dfs_referral);
call_trans2getdfsreferral(conn, req,
&state->param, state->total_param,
&state->data, state->total_data,
state->max_data_return);
END_PROFILE(Trans2_get_dfs_referral);
break;
}
case TRANSACT2_IOCTL:
{
START_PROFILE(Trans2_ioctl);
call_trans2ioctl(conn, req,
&state->param, state->total_param,
&state->data, state->total_data,
state->max_data_return);
END_PROFILE(Trans2_ioctl);
break;
}
default:
/* Error in request */
DEBUG(2,("Unknown request %d in trans2 call\n", state->call));
reply_nterror(req, NT_STATUS_NOT_IMPLEMENTED);
}
}
/****************************************************************************
Reply to a SMBtrans2.
****************************************************************************/
void reply_trans2(struct smb_request *req)
{
connection_struct *conn = req->conn;
unsigned int dsoff;
unsigned int dscnt;
unsigned int psoff;
unsigned int pscnt;
unsigned int tran_call;
struct trans_state *state;
NTSTATUS result;
START_PROFILE(SMBtrans2);
if (req->wct < 14) {
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
END_PROFILE(SMBtrans2);
return;
}
dsoff = SVAL(req->vwv+12, 0);
dscnt = SVAL(req->vwv+11, 0);
psoff = SVAL(req->vwv+10, 0);
pscnt = SVAL(req->vwv+9, 0);
tran_call = SVAL(req->vwv+14, 0);
result = allow_new_trans(conn->pending_trans, req->mid);
if (!NT_STATUS_IS_OK(result)) {
DEBUG(2, ("Got invalid trans2 request: %s\n",
nt_errstr(result)));
reply_nterror(req, result);
END_PROFILE(SMBtrans2);
return;
}
if (IS_IPC(conn)) {
switch (tran_call) {
/* List the allowed trans2 calls on IPC$ */
case TRANSACT2_OPEN:
case TRANSACT2_GET_DFS_REFERRAL:
case TRANSACT2_QFILEINFO:
case TRANSACT2_QFSINFO:
case TRANSACT2_SETFSINFO:
break;
default:
reply_nterror(req, NT_STATUS_ACCESS_DENIED);
END_PROFILE(SMBtrans2);
return;
}
}
if ((state = talloc(conn, struct trans_state)) == NULL) {
DEBUG(0, ("talloc failed\n"));
reply_nterror(req, NT_STATUS_NO_MEMORY);
END_PROFILE(SMBtrans2);
return;
}
state->cmd = SMBtrans2;
state->mid = req->mid;
state->vuid = req->vuid;
state->setup_count = SVAL(req->vwv+13, 0);
state->setup = NULL;
state->total_param = SVAL(req->vwv+0, 0);
state->param = NULL;
state->total_data = SVAL(req->vwv+1, 0);
state->data = NULL;
state->max_param_return = SVAL(req->vwv+2, 0);
state->max_data_return = SVAL(req->vwv+3, 0);
state->max_setup_return = SVAL(req->vwv+4, 0);
state->close_on_completion = BITSETW(req->vwv+5, 0);
state->one_way = BITSETW(req->vwv+5, 1);
state->call = tran_call;
/* All trans2 messages we handle have smb_sucnt == 1 - ensure this
is so as a sanity check */
if (state->setup_count != 1) {
/*
* Need to have rc=0 for ioctl to get job id for OS/2.
* Network printing will fail if function is not successful.
* Similar function in reply.c will be used if protocol
* is LANMAN1.0 instead of LM1.2X002.
* Until DosPrintSetJobInfo with PRJINFO3 is supported,
* outbuf doesn't have to be set(only job id is used).
*/
if ( (state->setup_count == 4)
&& (tran_call == TRANSACT2_IOCTL)
&& (SVAL(req->vwv+16, 0) == LMCAT_SPL)
&& (SVAL(req->vwv+17, 0) == LMFUNC_GETJOBID)) {
DEBUG(2,("Got Trans2 DevIOctl jobid\n"));
} else {
DEBUG(2,("Invalid smb_sucnt in trans2 call(%u)\n",state->setup_count));
DEBUG(2,("Transaction is %d\n",tran_call));
TALLOC_FREE(state);
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
END_PROFILE(SMBtrans2);
return;
}
}
if ((dscnt > state->total_data) || (pscnt > state->total_param))
goto bad_param;
if (state->total_data) {
if (smb_buffer_oob(state->total_data, 0, dscnt)
|| smb_buffer_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. */
state->data = (char *)SMB_MALLOC(state->total_data);
if (state->data == NULL) {
DEBUG(0,("reply_trans2: data malloc fail for %u "
"bytes !\n", (unsigned int)state->total_data));
TALLOC_FREE(state);
reply_nterror(req, NT_STATUS_NO_MEMORY);
END_PROFILE(SMBtrans2);
return;
}
memcpy(state->data,smb_base(req->inbuf)+dsoff,dscnt);
}
if (state->total_param) {
if (smb_buffer_oob(state->total_param, 0, pscnt)
|| smb_buffer_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. */
state->param = (char *)SMB_MALLOC(state->total_param);
if (state->param == NULL) {
DEBUG(0,("reply_trans: 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(SMBtrans2);
return;
}
memcpy(state->param,smb_base(req->inbuf)+psoff,pscnt);
}
state->received_data = dscnt;
state->received_param = pscnt;
if ((state->received_param == state->total_param) &&
(state->received_data == state->total_data)) {
handle_trans2(conn, req, state);
SAFE_FREE(state->data);
SAFE_FREE(state->param);
TALLOC_FREE(state);
END_PROFILE(SMBtrans2);
return;
}
DLIST_ADD(conn->pending_trans, state);
/* We need to send an interim response then receive the rest
of the parameter/data bytes */
reply_smb1_outbuf(req, 0, 0);
show_msg((char *)req->outbuf);
END_PROFILE(SMBtrans2);
return;
bad_param:
DEBUG(0,("reply_trans2: invalid trans parameters\n"));
SAFE_FREE(state->data);
SAFE_FREE(state->param);
TALLOC_FREE(state);
END_PROFILE(SMBtrans2);
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
}
/****************************************************************************
Reply to a SMBtranss2
****************************************************************************/
void reply_transs2(struct smb_request *req)
{
connection_struct *conn = req->conn;
unsigned int pcnt,poff,dcnt,doff,pdisp,ddisp;
struct trans_state *state;
START_PROFILE(SMBtranss2);
show_msg((const char *)req->inbuf);
/* Windows clients expect all replies to
a transact secondary (SMBtranss2 0x33)
to have a command code of transact
(SMBtrans2 0x32). See bug #8989
and also [MS-CIFS] section 2.2.4.47.2
for details.
*/
req->cmd = SMBtrans2;
if (req->wct < 8) {
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
END_PROFILE(SMBtranss2);
return;
}
for (state = conn->pending_trans; state != NULL;
state = state->next) {
if (state->mid == req->mid) {
break;
}
}
if ((state == NULL) || (state->cmd != SMBtrans2)) {
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
END_PROFILE(SMBtranss2);
return;
}
/* Revise state->total_param and state->total_data in case they have
changed downwards */
if (SVAL(req->vwv+0, 0) < state->total_param)
state->total_param = SVAL(req->vwv+0, 0);
if (SVAL(req->vwv+1, 0) < state->total_data)
state->total_data = SVAL(req->vwv+1, 0);
pcnt = SVAL(req->vwv+2, 0);
poff = SVAL(req->vwv+3, 0);
pdisp = SVAL(req->vwv+4, 0);
dcnt = SVAL(req->vwv+5, 0);
doff = SVAL(req->vwv+6, 0);
ddisp = SVAL(req->vwv+7, 0);
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 (smb_buffer_oob(state->total_param, pdisp, pcnt)
|| smb_buffer_oob(smb_len(req->inbuf), poff, pcnt)) {
goto bad_param;
}
memcpy(state->param+pdisp,smb_base(req->inbuf)+poff,pcnt);
}
if (dcnt) {
if (smb_buffer_oob(state->total_data, ddisp, dcnt)
|| smb_buffer_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(SMBtranss2);
return;
}
handle_trans2(conn, req, state);
DLIST_REMOVE(conn->pending_trans, state);
SAFE_FREE(state->data);
SAFE_FREE(state->param);
TALLOC_FREE(state);
END_PROFILE(SMBtranss2);
return;
bad_param:
DEBUG(0,("reply_transs2: 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(SMBtranss2);
return;
}
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