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/*
Unix SMB/CIFS implementation.
SMBsearch handling
Copyright (C) Andrew Tridgell 2003
Copyright (C) James J Myers 2003 <myersjj@samba.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*
This file handles the parsing of transact2 requests
*/
#include "includes.h"
/* check req->async.status and if not OK then send an error reply */
#define CHECK_ASYNC_STATUS do { \
if (!NT_STATUS_IS_OK(req->async_states->status)) { \
req_reply_error(req, req->async_states->status); \
return; \
}} while (0)
/*
check if the backend wants to handle the request asynchronously.
if it wants it handled synchronously then call the send function
immediately
*/
#define REQ_ASYNC_TAIL do { \
if (!(req->async_states->state & NTVFS_ASYNC_STATE_ASYNC)) { \
req->async_states->send_fn(req); \
}} while (0)
/* useful wrapper for talloc with NO_MEMORY reply */
#define REQ_TALLOC(ptr) do { \
ptr = talloc(req, sizeof(*(ptr))); \
if (!ptr) { \
req_reply_error(req, NT_STATUS_NO_MEMORY); \
return; \
}} while (0)
#define CHECK_MIN_BLOB_SIZE(blob, size) do { \
if ((blob)->length < (size)) { \
return NT_STATUS_INFO_LENGTH_MISMATCH; \
}} while (0)
/* a structure to encapsulate the state information about
* an in-progress search first/next operation */
struct search_state {
struct smbsrv_request *req;
union smb_search_data *file;
uint16_t last_entry_offset;
};
/*
fill a single entry in a search find reply
*/
static void find_fill_info(struct smbsrv_request *req,
union smb_search_data *file)
{
char *p;
req_grow_data(req, req->out.data_size + 43);
p = req->out.data + req->out.data_size - 43;
SCVAL(p, 0, file->search.id.reserved);
memcpy(p+1, file->search.id.name, 11);
SCVAL(p, 12, file->search.id.handle);
SIVAL(p, 13, file->search.id.server_cookie);
SIVAL(p, 17, file->search.id.client_cookie);
SCVAL(p, 21, file->search.attrib);
srv_push_dos_date(req->smb_conn, p, 22, file->search.write_time);
SIVAL(p, 26, file->search.size);
memset(p+30, ' ', 12);
memcpy(p+30, file->search.name, MIN(strlen(file->search.name)+1, 12));
SCVAL(p,42,0);
}
/* callback function for search first/next */
static BOOL find_callback(void *private, union smb_search_data *file)
{
struct search_state *state = (struct search_state *)private;
find_fill_info(state->req, file);
return True;
}
/****************************************************************************
Reply to a search.
****************************************************************************/
void reply_search(struct smbsrv_request *req)
{
union smb_search_first *sf;
union smb_search_next *sn;
uint16_t resume_key_length;
struct search_state state;
char *p;
NTSTATUS status;
enum smb_search_level level = RAW_SEARCH_SEARCH;
uint8_t op = CVAL(req->in.hdr,HDR_COM);
if (op == SMBffirst) {
level = RAW_SEARCH_FFIRST;
} else if (op == SMBfunique) {
level = RAW_SEARCH_FUNIQUE;
}
REQ_TALLOC(sf);
/* parse request */
if (req->in.wct != 2) {
req_reply_error(req, NT_STATUS_INVALID_PARAMETER);
return;
}
p = req->in.data;
p += req_pull_ascii4(req, &sf->search_first.in.pattern,
p, STR_TERMINATE);
if (!sf->search_first.in.pattern) {
req_reply_error(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
return;
}
if (req_data_oob(req, p, 3)) {
req_reply_error(req, NT_STATUS_INVALID_PARAMETER);
return;
}
if (*p != 5) {
req_reply_error(req, NT_STATUS_INVALID_PARAMETER);
return;
}
resume_key_length = SVAL(p, 1);
p += 3;
/* setup state for callback */
state.req = req;
state.file = NULL;
state.last_entry_offset = 0;
/* construct reply */
req_setup_reply(req, 1, 0);
req_append_var_block(req, NULL, 0);
if (resume_key_length != 0) {
if (resume_key_length != 21 ||
req_data_oob(req, p, 21) ||
level == RAW_SEARCH_FUNIQUE) {
req_reply_error(req, NT_STATUS_INVALID_PARAMETER);
return;
}
/* do a search next operation */
REQ_TALLOC(sn);
sn->search_next.in.id.reserved = CVAL(p, 0);
memcpy(sn->search_next.in.id.name, p+1, 11);
sn->search_next.in.id.handle = CVAL(p, 12);
sn->search_next.in.id.server_cookie = IVAL(p, 13);
sn->search_next.in.id.client_cookie = IVAL(p, 17);
sn->search_next.level = level;
sn->search_next.in.max_count = SVAL(req->in.vwv, VWV(0));
sn->search_next.in.search_attrib = SVAL(req->in.vwv, VWV(1));
/* call backend */
status = ntvfs_search_next(req, sn, &state, find_callback);
SSVAL(req->out.vwv, VWV(0), sn->search_next.out.count);
} else {
/* do a search first operation */
sf->search_first.level = level;
sf->search_first.in.search_attrib = SVAL(req->in.vwv, VWV(1));
sf->search_first.in.max_count = SVAL(req->in.vwv, VWV(0));
/* call backend */
status = ntvfs_search_first(req, sf, &state, find_callback);
SSVAL(req->out.vwv, VWV(0), sf->search_first.out.count);
}
if (!NT_STATUS_IS_OK(status)) {
req_reply_error(req, status);
return;
}
req_send_reply(req);
}
/****************************************************************************
Reply to a fclose (async reply)
****************************************************************************/
static void reply_fclose_send(struct smbsrv_request *req)
{
CHECK_ASYNC_STATUS;
/* construct reply */
req_setup_reply(req, 1, 0);
SSVAL(req->out.vwv, VWV(0), 0);
req_send_reply(req);
}
/****************************************************************************
Reply to fclose (stop directory search).
****************************************************************************/
void reply_fclose(struct smbsrv_request *req)
{
union smb_search_close *sc;
uint16_t resume_key_length;
char *p;
const char *pattern;
REQ_TALLOC(sc);
/* parse request */
if (req->in.wct != 2) {
req_reply_error(req, NT_STATUS_INVALID_PARAMETER);
return;
}
p = req->in.data;
p += req_pull_ascii4(req, &pattern, p, STR_TERMINATE);
if (pattern && *pattern) {
req_reply_error(req, NT_STATUS_INVALID_PARAMETER);
return;
}
if (req_data_oob(req, p, 3)) {
req_reply_error(req, NT_STATUS_INVALID_PARAMETER);
return;
}
if (*p != 5) {
req_reply_error(req, NT_STATUS_INVALID_PARAMETER);
return;
}
resume_key_length = SVAL(p, 1);
p += 3;
if (resume_key_length != 21) {
req_reply_error(req, NT_STATUS_INVALID_PARAMETER);
return;
}
if (req_data_oob(req, p, 21)) {
req_reply_error(req, NT_STATUS_INVALID_PARAMETER);
return;
}
sc->fclose.level = RAW_FINDCLOSE_FCLOSE;
sc->fclose.in.max_count = SVAL(req->in.vwv, VWV(0));
sc->fclose.in.search_attrib = SVAL(req->in.vwv, VWV(1));
sc->fclose.in.id.reserved = CVAL(p, 0);
memcpy(sc->fclose.in.id.name, p+1, 11);
sc->fclose.in.id.handle = CVAL(p, 12);
sc->fclose.in.id.server_cookie = IVAL(p, 13);
sc->fclose.in.id.client_cookie = IVAL(p, 17);
/* do a search close operation */
req->async_states->state |= NTVFS_ASYNC_STATE_MAY_ASYNC;
req->async_states->send_fn = reply_fclose_send;
req->async_states->private_data = sc;
/* call backend */
req->async_states->status = ntvfs_search_close(req, sc);
REQ_ASYNC_TAIL;
}
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