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#include <u.h>
#include <libc.h>
#include <authsrv.h>
int
_asgetticket(int fd, Ticketreq *tr, char *tbuf, int tbuflen)
{
char err[ERRMAX];
int i, n, m, r;
strcpy(err, "AS protocol botch");
errstr(err, ERRMAX);
if(_asrequest(fd, tr) < 0)
return -1;
if(_asrdresp(fd, tbuf, 0) < 0)
return -1;
r = 0;
for(i = 0; i<2; i++){
for(n=0; (m = convM2T(tbuf, n, nil, nil)) <= 0; n += m){
m = -m;
if(m <= n || m > tbuflen)
return -1;
m -= n;
if(readn(fd, tbuf+n, m) != m)
return -1;
}
r += n;
tbuf += n;
tbuflen -= n;
}
errstr(err, ERRMAX);
return r;
}
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