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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.status)) { \
req_reply_error(req, req->async.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->control_flags & REQ_CONTROL_ASYNC)) { \
req->async.send_fn(req); \
}} while (0)
/* useful wrapper for talloc with NO_MEMORY reply */
#define REQ_TALLOC(ptr, size) do { \
ptr = talloc(req->mem_ctx, size); \
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 request_context *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 request_context *req,
union smb_search_data *file)
{
char *p = req->out.data + req->out.data_size;
uint32_t dos_date;
char search_name[13];
DEBUG(9,("find_fill_info: input file data: attr=0x%x size=%u time=0x%x name=%13s\n",
file->search.attrib, file->search.size,
(uint32_t)file->search.write_time, file->search.name));
p += req_append_bytes(req, file->search.search_id.data, 21);
p += req_append_bytes(req, (char*)&file->search.attrib, 1);
srv_push_dos_date3(req->smb_ctx, (uint8_t *)&dos_date, 0, file->search.write_time);
p += req_append_bytes(req, (char*)&dos_date, 4);
p += req_append_bytes(req, (char*)&file->search.size, 4);
memset(&search_name[0], ' ', 13);
memcpy(&search_name[0], file->search.name,
MAX(13, strlen(file->search.name)));
p += req_append_bytes(req, &search_name[0], 13);
}
/* 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 request_context *req)
{
union smb_search_first *sf;
union smb_search_next *sn;
DATA_BLOB resume_key;
uint16_t resume_key_length;
struct search_state state;
char *p;
REQ_TALLOC(sf, sizeof(*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;
}
/* pull in type 5 byte and length */
if (!req_pull_blob(req, p, 3, &resume_key))
req_reply_error(req, NT_STATUS_INVALID_PARAMETER);
resume_key_length = SVAL(resume_key.data, 1);
p += 3;
DEBUG(19,("reply_search: pattern=%s, key_length=%d\n",
sf->search_first.in.pattern, resume_key_length));
/* 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) {
/* do a search next operation */
REQ_TALLOC(sn, sizeof(*sn));
sn->search_next.level = RAW_SEARCH_SEARCH;
req->async.private = sn;
if (!req_pull_blob(req, req->in.data, resume_key_length,
&(sn->search_next.in.search_id)))
req_reply_error(req, NT_STATUS_INVALID_PARAMETER);
sn->search_next.in.search_attrib = SVAL(req->in.vwv, VWV(1));
sn->search_next.in.max_count = SVAL(req->in.vwv, VWV(0));
/* call backend */
req->async.status = req->tcon->ntvfs_ops->search_next(req,
sn, &state, find_callback);
SSVAL(req->out.vwv, VWV(0), sn->search_next.out.count);
} else {
/* do a search first operation */
req->async.private = sf;
sf->search_first.level = RAW_SEARCH_SEARCH;
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 */
req->async.status = req->tcon->ntvfs_ops->search_first(req,
sf, &state, find_callback);
SSVAL(req->out.vwv, VWV(0), sf->search_first.out.count);
}
req_send_reply(req);
}
/****************************************************************************
Reply to a fclose (async reply)
****************************************************************************/
static void reply_fclose_send(struct request_context *req)
{
CHECK_ASYNC_STATUS;
/* construct reply */
req_setup_reply(req, 1, 0);
req_send_reply(req);
}
/****************************************************************************
Reply to fclose (stop directory search).
****************************************************************************/
void reply_fclose(struct request_context *req)
{
union smb_search_next *sn;
DATA_BLOB resume_key;
uint16_t resume_key_length;
REQ_TALLOC(sn, sizeof(*sn));
/* parse request */
if (req->in.wct != 2) {
req_reply_error(req, NT_STATUS_INVALID_PARAMETER);
return;
}
sn->search_next.level = RAW_SEARCH_FCLOSE;
/* pull in type 5 byte and length */
if (!req_pull_blob(req, req->in.data, 3, &resume_key))
req_reply_error(req, NT_STATUS_INVALID_PARAMETER);
resume_key_length = SVAL(resume_key.data, 1);
if (resume_key_length > 0) {
/* do a search close operation */
if (!req_pull_blob(req, req->in.data, resume_key_length,
&(sn->search_next.in.search_id)))
req_reply_error(req, NT_STATUS_INVALID_PARAMETER);
} else
req_reply_error(req, NT_STATUS_INVALID_PARAMETER);
req->async.send_fn = reply_fclose_send;
req->async.private = sn;
/* call backend */
req->async.status = req->tcon->ntvfs_ops->search_next(req, sn,
NULL, NULL);
REQ_ASYNC_TAIL;
}
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