2017-12-14 Fred Gleason <fredg@paravelsystems.com>

* Added an 'RDTempDirectory' class.
	* Fixed a race in the 'Export' Web API call.

lib/rdtempdirectory.h

@@ -0,0 +1,42 @@
+// rdtempdirectory.h
+//
+// Securely create and then remove a temporary directory
+//
+//   (C) Copyright 2017 Fred Gleason <fredg@paravelsystems.com>
+//
+//   This program is free software; you can redistribute it and/or modify
+//   it under the terms of the GNU General Public License version 2 as
+//   published by the Free Software Foundation.
+//
+//   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.
+//
+
+#ifndef RDTEMPDIRECTORY_H
+#define RDTEMPDIRECTORY_H
+
+#include <qdir.h>
+#include <qstring.h>
+
+class RDTempDirectory
+{
+ public:
+  RDTempDirectory(const QString &base_name);
+  ~RDTempDirectory();
+  QString path() const;
+  bool create(QString *err_msg);
+  static QString basePath();
+
+ private:
+  QString temp_base_name;
+  QDir *temp_dir;
+};
+
+
+#endif  // RDTEMPDIRECTORY_H