#include <u.h>#include <libc.h>#include <authsrv.h> int_asgetpakkey(int fd, Ticketreq *tr, Authkey *a){	uchar y[PAKYLEN];	PAKpriv p;	int type; 	type = tr->type;	tr->type = AuthPAK;	if(_asrequest(fd, tr) != 0){		tr->type = type;		return -1;	}	tr->type = type;	authpak_new(&p, a, y, 1);	if(write(fd, y, PAKYLEN) != PAKYLEN	|| _asrdresp(fd, (char*)y, PAKYLEN) != PAKYLEN){		memset(&p, 0, sizeof(p));		return -1;	}	return authpak_finish(&p, a, y);}