Adding upstream version 2:4.20.0+dfsg.upstream/2%4.20.0+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 113 insertions, 0 deletions

diff --git a/source3/modules/vfs_readonly.c b/source3/modules/vfs_readonly.c
new file mode 100644
index 0000000..cde8ef9
--- /dev/null
+++ b/source3/modules/vfs_readonly.c
@@ -0,0 +1,113 @@
+/*
+   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], &current_time);
+    time_t end_period   = get_date(period[1], &current_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);
+}