Shared namespace refactoring, enum class refactoring, going offline related crash fix

shared/utils.cpp

@@ -0,0 +1,29 @@
+/*
+ * Squawk messenger. 
+ * Copyright (C) 2019  Yury Gubich <blue@macaw.me>
+ * 
+ * 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/>.
+ */
+
+#include "utils.h"
+
+QString Shared::generateUUID()
+{
+    uuid_t uuid;
+    uuid_generate(uuid);
+    
+    char uuid_str[36];
+    uuid_unparse_lower(uuid, uuid_str);
+    return uuid_str;
+}