Redirect to error.cgi when saving fails.

Not working yet, still getting there.

src/tawashi_implem/error_reasons.hpp

@@ -0,0 +1,26 @@
+/* Copyright 2017, Michele Santullo
+ * This file is part of "tawashi".
+ *
+ * "tawashi" 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.
+ *
+ * "tawashi" 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 "tawashi".  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+namespace tawashi {
+	enum ErrorReasons : int {
+		PostLengthNotInRange,
+		PastieNotSaved,
+		UserFlooding
+	};
+} //namespace tawashi