/* 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 = ent = &conn->vuid_cache.array[i]; ent->vuid = UID_FIELD_INVALID; TALLOC_FREE(ent->session_info); ent->read_only = false; } 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(void); NTSTATUS vfs_readonly_init(void) { return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, MODULE_NAME, &vfs_readonly_fns); }