#include <u.h>#include <libc.h>#include <authsrv.h>#include <bio.h>#include <ndb.h> intauthdial(char *netroot, char *dom){	char *p;	int rv; 	if(dom == nil)		/* look for one relative to my machine */		return dial(netmkaddr("$auth", netroot, "ticket"), 0, 0, 0); 	/* look up an auth server in an authentication domain */	p = csgetvalue(netroot, "authdom", dom, "auth", nil); 	/* if that didn't work, just try the IP domain */	if(p == nil)		p = csgetvalue(netroot, "dom", dom, "auth", nil);	/*	 * if that didn't work, try p9auth.$dom.  this is very helpful if	 * you can't edit /lib/ndb.	 */	if(p == nil)		p = smprint("p9auth.%s", dom);	if(p == nil){			/* should no longer ever happen */		werrstr("no auth server found for %s", dom);		return -1;	}	rv = dial(netmkaddr(p, netroot, "ticket"), 0, 0, 0);	free(p);	return rv;}