Add vfs_readonly module which allows to enforce periodic read-only limit on a share based on a specified start and end dates according to date(1) format

(This used to be commit 8b263c2fda89ff6aa2dc3a60460c5d46cf0814c6)

1 files changed, 98 insertions, 0 deletions

diff --git a/source3/modules/vfs_readonly.c b/source3/modules/vfs_readonly.c
new file mode 100644
index 0000000000..f1914b6841
--- /dev/null
+++ b/source3/modules/vfs_readonly.c
@@ -0,0 +1,98 @@
+/*
+   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 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 work was sponsored by Optifacio Software Services, Inc.
+*/
+
+#include "includes.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, 
+			    connection_struct *conn, 
+			    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); 
+
+  if (period && period[0] && period[1]) {
+    time_t current_time = time(NULL);
+    time_t begin_period = get_date(period[0], &current_time);
+    time_t end_period   = get_date(period[1], &current_time);
+
+    if ((current_time >= begin_period) && (current_time <= end_period)) {
+      conn->read_only = True;
+    }
+
+    return SMB_VFS_NEXT_CONNECT(handle, conn, service, user);
+
+  } else {
+    
+    return 1;
+    
+  }
+}
+
+
+/* VFS operations structure */
+
+static vfs_op_tuple readonly_op_tuples[] = {
+	/* Disk operations */
+  {SMB_VFS_OP(readonly_connect),	SMB_VFS_OP_CONNECT, SMB_VFS_LAYER_OPAQUE},
+  {SMB_VFS_OP(NULL),   		SMB_VFS_OP_NOOP,    SMB_VFS_LAYER_NOOP}
+};
+
+NTSTATUS init_module(void)
+{
+  return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, MODULE_NAME, readonly_op_tuples);
+}