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/*
Unix SMB/Netbios implementation.
Version 1.9.
VFS module to perform read-only limitation based on a time period
Copyright (C) Alexander Bokovoy 2003
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
This work was sponsored by Optifacio Software Services, Inc.
*/
#include "includes.h"
#include "smbd/smbd.h"
#include "getdate.h"
/*
This module performs a read-only limitation for specified share
(or all of them if it is loaded in a [global] section) based on period
definition in smb.conf. You can stack this module multiple times under
different names to get multiple limit intervals.
The module uses get_date() function from coreutils' date utility to parse
specified dates according to date(1) rules. Look into info page for date(1)
to understand the syntax.
The module accepts one parameter:
readonly: period = "begin date","end date"
where "begin date" and "end date" are mandatory and should comply with date(1)
syntax for date strings.
Example:
readonly: period = "today 14:00","today 15:00"
Default:
readonly: period = "today 0:0:0","tomorrow 0:0:0"
The default covers whole day thus making the share readonly
*/
#define MODULE_NAME "readonly"
static int readonly_connect(vfs_handle_struct *handle,
const char *service,
const char *user)
{
const char *period_def[] = {"today 0:0:0", "tomorrow 0:0:0"};
const char **period = lp_parm_string_list(SNUM(handle->conn),
(handle->param ? handle->param : MODULE_NAME),
"period", period_def);
int ret = SMB_VFS_NEXT_CONNECT(handle, service, user);
if (ret < 0) {
return ret;
}
if (period && period[0] && period[1]) {
int i;
time_t current_time = time(NULL);
time_t begin_period = get_date(period[0], ¤t_time);
time_t end_period = get_date(period[1], ¤t_time);
if ((current_time >= begin_period) && (current_time <= end_period)) {
connection_struct *conn = handle->conn;
handle->conn->read_only = True;
/* Wipe out the VUID cache. */
for (i=0; i< VUID_CACHE_SIZE; i++) {
struct vuid_cache_entry *ent = &conn->vuid_cache->array[i];
ent->vuid = UID_FIELD_INVALID;
TALLOC_FREE(ent->session_info);
ent->read_only = false;
ent->share_access = 0;
}
conn->vuid_cache->next_entry = 0;
}
return 0;
} else {
return 0;
}
}
static struct vfs_fn_pointers vfs_readonly_fns = {
.connect_fn = readonly_connect
};
NTSTATUS vfs_readonly_init(TALLOC_CTX *);
NTSTATUS vfs_readonly_init(TALLOC_CTX *ctx)
{
return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, MODULE_NAME,
&vfs_readonly_fns);
}
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