struct ChanUser* getChannelUsers(struct ChanNode *chan, struct ChanUser *last);
struct ChanUser* getUserChannels(struct UserNode *user, struct ChanUser *last);
void delChanUser(struct ChanUser *chanuser, int freeChanUser);
struct ChanUser* getChannelUsers(struct ChanNode *chan, struct ChanUser *last);
struct ChanUser* getUserChannels(struct UserNode *user, struct ChanUser *last);
void delChanUser(struct ChanUser *chanuser, int freeChanUser);