UPAP_HEADERLEN
if (l < UPAP_HEADERLEN) {
if (len < UPAP_HEADERLEN) {
len -= UPAP_HEADERLEN;
outlen = UPAP_HEADERLEN + 2 * sizeof (u_char) +
outlen = UPAP_HEADERLEN + sizeof (u_char) + msglen;
if (plen < UPAP_HEADERLEN)
if (len < UPAP_HEADERLEN || len > plen)
len -= UPAP_HEADERLEN;