Here is a list of all variables with links to the files they belong to:

• auth_attempts : server.cpp
• config : toml_parser.hpp
• DEBUG_LOG_PARSE : rbtree.hpp
• debugLogBoolStr : taglib_parser.h
• DIRECTORY : server.cpp
• DIRECTORY_FIELD : rbtree.hpp
• PASSWORD_HASH : server.cpp
• SALT : client.cpp, server.cpp
• USERNAME : client.cpp, server.cpp