/*
* Encode the NativeReal using the standard REAL type DER encoder.
*/
asn_enc_rval_t
NativeReal_encode_der(asn_TYPE_descriptor_t *td, void *ptr,
int tag_mode, ber_tlv_tag_t tag,
asn_app_consume_bytes_f *cb, void *app_key) {
double Dbl = *(const double *)ptr;
asn_enc_rval_t erval;
REAL_t tmp;
/* Prepare a temporary clean structure */
memset(&tmp, 0, sizeof(tmp));
if(asn_double2REAL(&tmp, Dbl)) {
erval.encoded = -1;
erval.failed_type = td;
erval.structure_ptr = ptr;
return erval;
}
/* Encode a fake REAL */
erval = der_encode_primitive(td, &tmp, tag_mode, tag, cb, app_key);
if(erval.encoded == -1) {
assert(erval.structure_ptr == &tmp);
erval.structure_ptr = ptr;
}
/* Free possibly allocated members of the temporary structure */
ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_REAL, &tmp);
return erval;
}
/*
* Encode INTEGER type using DER.
*/
asn_enc_rval_t
INTEGER_encode_der(asn_TYPE_descriptor_t *td, void *sptr,
int tag_mode, ber_tlv_tag_t tag,
asn_app_consume_bytes_f *cb, void *app_key) {
INTEGER_t *st = (INTEGER_t *)sptr;
ASN_DEBUG("%s %s as INTEGER (tm=%d)",
cb?"Encoding":"Estimating", td->name, tag_mode);
/*
* Canonicalize integer in the buffer.
* (Remove too long sign extension, remove some first 0x00 bytes)
*/
if(st->buf) {
uint8_t *buf = st->buf;
uint8_t *end1 = buf + st->size - 1;
int shift;
/* Compute the number of superfluous leading bytes */
for(; buf < end1; buf++) {
/*
* If the contents octets of an integer value encoding
* consist of more than one octet, then the bits of the
* first octet and bit 8 of the second octet:
* a) shall not all be ones; and
* b) shall not all be zero.
*/
switch(*buf) {
case 0x00: if((buf[1] & 0x80) == 0)
continue;
break;
case 0xff: if((buf[1] & 0x80))
continue;
break;
}
break;
}
/* Remove leading superfluous bytes from the integer */
shift = buf - st->buf;
if(shift) {
uint8_t *nb = st->buf;
uint8_t *end;
st->size -= shift; /* New size, minus bad bytes */
end = nb + st->size;
for(; nb < end; nb++, buf++)
*nb = *buf;
}
} /* if(1) */
return der_encode_primitive(td, sptr, tag_mode, tag, cb, app_key);
}
