static int
pack_cred(CREDENTIALS *cred, unsigned char *buf)
{
unsigned char *p = buf;
p += krb_put_nir(cred->service, cred->instance, cred->realm, p);
memcpy(p, cred->session, 8);
p += 8;
*p++ = cred->lifetime;
*p++ = cred->kvno;
p += krb_put_int(cred->ticket_st.length, p, 4);
memcpy(p, cred->ticket_st.dat, cred->ticket_st.length);
p += cred->ticket_st.length;
p += krb_put_int(cred->issue_date, p, 4);
p += krb_put_nir(cred->pname, cred->pinst, NULL, p);
return p - buf;
}
static int
build_request(KTEXT req, char *name, char *inst, char *realm,
u_int32_t checksum)
{
struct timeval tv;
unsigned char *p = req->dat;
int tmp;
size_t rem = sizeof(req->dat);
tmp = krb_put_nir(name, inst, realm, p, rem);
if (tmp < 0)
return KFAILURE;
p += tmp;
rem -= tmp;
tmp = krb_put_int(checksum, p, rem, 4);
if (tmp < 0)
return KFAILURE;
p += tmp;
rem -= tmp;
/* Fill in the times on the request id */
krb_kdctimeofday(&tv);
if (rem < 1)
return KFAILURE;
*p++ = tv.tv_usec / 5000; /* 5ms */
--rem;
tmp = krb_put_int(tv.tv_sec, p, rem, 4);
if (tmp < 0)
return KFAILURE;
p += tmp;
rem -= tmp;
/* Fill to a multiple of 8 bytes for DES */
req->length = ((p - req->dat + 7)/8) * 8;
return 0;
}
