| 1 | /*
|
|---|
| 2 | Unix SMB/CIFS implementation.
|
|---|
| 3 | client change notify operations
|
|---|
| 4 | Copyright (C) Andrew Tridgell 2003
|
|---|
| 5 |
|
|---|
| 6 | This program is free software; you can redistribute it and/or modify
|
|---|
| 7 | it under the terms of the GNU General Public License as published by
|
|---|
| 8 | the Free Software Foundation; either version 3 of the License, or
|
|---|
| 9 | (at your option) any later version.
|
|---|
| 10 |
|
|---|
| 11 | This program is distributed in the hope that it will be useful,
|
|---|
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|---|
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|---|
| 14 | GNU General Public License for more details.
|
|---|
| 15 |
|
|---|
| 16 | You should have received a copy of the GNU General Public License
|
|---|
| 17 | along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|---|
| 18 | */
|
|---|
| 19 |
|
|---|
| 20 | #include "includes.h"
|
|---|
| 21 | #include <tevent.h>
|
|---|
| 22 | #include "libcli/raw/libcliraw.h"
|
|---|
| 23 | #include "libcli/raw/raw_proto.h"
|
|---|
| 24 |
|
|---|
| 25 | /****************************************************************************
|
|---|
| 26 | change notify (async send)
|
|---|
| 27 | ****************************************************************************/
|
|---|
| 28 | _PUBLIC_ struct smbcli_request *smb_raw_changenotify_send(struct smbcli_tree *tree, union smb_notify *parms)
|
|---|
| 29 | {
|
|---|
| 30 | struct smb_nttrans nt;
|
|---|
| 31 | uint8_t setup[8];
|
|---|
| 32 |
|
|---|
| 33 | if (parms->nttrans.level != RAW_NOTIFY_NTTRANS) {
|
|---|
| 34 | return NULL;
|
|---|
| 35 | }
|
|---|
| 36 |
|
|---|
| 37 | nt.in.max_setup = 0;
|
|---|
| 38 | nt.in.max_param = parms->nttrans.in.buffer_size;
|
|---|
| 39 | nt.in.max_data = 0;
|
|---|
| 40 | nt.in.setup_count = 4;
|
|---|
| 41 | nt.in.setup = setup;
|
|---|
| 42 | SIVAL(setup, 0, parms->nttrans.in.completion_filter);
|
|---|
| 43 | SSVAL(setup, 4, parms->nttrans.in.file.fnum);
|
|---|
| 44 | SSVAL(setup, 6, parms->nttrans.in.recursive);
|
|---|
| 45 | nt.in.function = NT_TRANSACT_NOTIFY_CHANGE;
|
|---|
| 46 | nt.in.params = data_blob(NULL, 0);
|
|---|
| 47 | nt.in.data = data_blob(NULL, 0);
|
|---|
| 48 |
|
|---|
| 49 | return smb_raw_nttrans_send(tree, &nt);
|
|---|
| 50 | }
|
|---|
| 51 |
|
|---|
| 52 | /****************************************************************************
|
|---|
| 53 | change notify (async recv)
|
|---|
| 54 | ****************************************************************************/
|
|---|
| 55 | _PUBLIC_ NTSTATUS smb_raw_changenotify_recv(struct smbcli_request *req,
|
|---|
| 56 | TALLOC_CTX *mem_ctx, union smb_notify *parms)
|
|---|
| 57 | {
|
|---|
| 58 | struct smb_nttrans nt;
|
|---|
| 59 | NTSTATUS status;
|
|---|
| 60 | uint32_t ofs, i;
|
|---|
| 61 | struct smbcli_session *session = req?req->session:NULL;
|
|---|
| 62 |
|
|---|
| 63 | if (parms->nttrans.level != RAW_NOTIFY_NTTRANS) {
|
|---|
| 64 | return NT_STATUS_INVALID_LEVEL;
|
|---|
| 65 | }
|
|---|
| 66 |
|
|---|
| 67 | status = smb_raw_nttrans_recv(req, mem_ctx, &nt);
|
|---|
| 68 | if (!NT_STATUS_IS_OK(status)) {
|
|---|
| 69 | return status;
|
|---|
| 70 | }
|
|---|
| 71 |
|
|---|
| 72 | parms->nttrans.out.changes = NULL;
|
|---|
| 73 | parms->nttrans.out.num_changes = 0;
|
|---|
| 74 |
|
|---|
| 75 | /* count them */
|
|---|
| 76 | for (ofs=0; nt.out.params.length - ofs > 12; ) {
|
|---|
| 77 | uint32_t next = IVAL(nt.out.params.data, ofs);
|
|---|
| 78 | if (next % 4 != 0)
|
|---|
| 79 | return NT_STATUS_INVALID_NETWORK_RESPONSE;
|
|---|
| 80 | parms->nttrans.out.num_changes++;
|
|---|
| 81 | if (next == 0 ||
|
|---|
| 82 | ofs + next >= nt.out.params.length) break;
|
|---|
| 83 | ofs += next;
|
|---|
| 84 | }
|
|---|
| 85 |
|
|---|
| 86 | /* allocate array */
|
|---|
| 87 | parms->nttrans.out.changes = talloc_array(mem_ctx, struct notify_changes, parms->nttrans.out.num_changes);
|
|---|
| 88 | if (!parms->nttrans.out.changes) {
|
|---|
| 89 | return NT_STATUS_NO_MEMORY;
|
|---|
| 90 | }
|
|---|
| 91 |
|
|---|
| 92 | for (i=ofs=0; i<parms->nttrans.out.num_changes; i++) {
|
|---|
| 93 | parms->nttrans.out.changes[i].action = IVAL(nt.out.params.data, ofs+4);
|
|---|
| 94 | smbcli_blob_pull_string(session, mem_ctx, &nt.out.params,
|
|---|
| 95 | &parms->nttrans.out.changes[i].name,
|
|---|
| 96 | ofs+8, ofs+12, STR_UNICODE);
|
|---|
| 97 | ofs += IVAL(nt.out.params.data, ofs);
|
|---|
| 98 | }
|
|---|
| 99 |
|
|---|
| 100 | return NT_STATUS_OK;
|
|---|
| 101 | }
|
|---|
| 102 |
|
|---|
| 103 | /****************************************************************************
|
|---|
| 104 | Send a NT Cancel request - used to hurry along a pending request. Usually
|
|---|
| 105 | used to cancel a pending change notify request
|
|---|
| 106 | note that this request does not expect a response!
|
|---|
| 107 | ****************************************************************************/
|
|---|
| 108 | NTSTATUS smb_raw_ntcancel(struct smbcli_request *oldreq)
|
|---|
| 109 | {
|
|---|
| 110 | bool ok;
|
|---|
| 111 |
|
|---|
| 112 | if (oldreq->subreqs[0] == NULL) {
|
|---|
| 113 | return NT_STATUS_OK;
|
|---|
| 114 | }
|
|---|
| 115 |
|
|---|
| 116 | ok = tevent_req_cancel(oldreq->subreqs[0]);
|
|---|
| 117 | if (!ok) {
|
|---|
| 118 | return NT_STATUS_INTERNAL_ERROR;
|
|---|
| 119 | }
|
|---|
| 120 |
|
|---|
| 121 | return NT_STATUS_OK;
|
|---|
| 122 | }
|
|---|
