struct UserNode* createTempUserMask(const char *mask);
int renameUser(struct UserNode* user, const char *new_nick);
void delUser(struct UserNode* user, int freeUser);
struct UserNode* createTempUserMask(const char *mask);
int renameUser(struct UserNode* user, const char *new_nick);
void delUser(struct UserNode* user, int freeUser);