+ /** Client list, a hash_map containing all clients, local and remote
+ */
+ user_hash clientlist;
+
+ /** Client list stored by UUID. Contains all clients, and is updated
+ * automatically by the constructor and destructor of User.
+ */
+ user_hash uuidlist;
+
+ /** Oper list, a vector containing all local and remote opered users
+ */
+ OperList all_opers;
+
+ /** Number of unregistered users online right now.
+ * (Unregistered means before USER/NICK/dns)
+ */
+ unsigned int unregistered_count;
+
+ /**
+ * Reset the already_sent IDs so we don't wrap it around and drop a message
+ */
+ void GarbageCollect();
+
+ /** Perform background user events such as PING checks
+ */
+ void DoBackgroundUserStuff();
+
+ /** Returns true when all modules have done pre-registration checks on a user
+ * @param user The user to verify
+ * @return True if all modules have finished checking this user
+ */
+ bool AllModulesReportReady(LocalUser* user);
+
+ /** Add a client to the system.
+ * This will create a new User, insert it into the user_hash,
+ * initialize it as not yet registered, and add it to the socket engine.
+ * @param socket The socket id (file descriptor) this user is on
+ * @param via The socket that this user connected using
+ * @param client The IP address and client port of the user
+ * @param server The server IP address and port used by the user
+ * @return This function has no return value, but a call to AddClient may remove the user.