90 lines
2.5 KiB
C
90 lines
2.5 KiB
C
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/*
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* Copyright (c) 2017 Lev Walkin <vlm@lionet.info>. All rights reserved.
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* Redistribution and modifications are permitted subject to BSD license.
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*/
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#include "asn_internal.h"
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#include "REAL.h"
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/*
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* Encode as Canonical OER
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*/
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asn_enc_rval_t
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REAL_encode_oer(const asn_TYPE_descriptor_t *td,
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const asn_oer_constraints_t *constraints, const void *sptr,
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asn_app_consume_bytes_f *cb, void *app_key) {
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const REAL_t *st = sptr;
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asn_enc_rval_t er = {0,0,0};
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ssize_t len_len;
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if(!st || !st->buf || !td)
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ASN__ENCODE_FAILED;
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if(!constraints) constraints = td->encoding_constraints.oer_constraints;
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if(constraints && constraints->value.width != 0) {
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/* If we're constrained to a narrow float/double representation, we
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* shouldn't have ended up using REAL. Expecting NativeReal. */
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ASN__ENCODE_FAILED;
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}
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/* Encode a fake REAL */
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len_len = oer_serialize_length(st->size, cb, app_key);
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if(len_len < 0 || cb(st->buf, st->size, app_key) < 0) {
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ASN__ENCODE_FAILED;
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} else {
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er.encoded = len_len + st->size;
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ASN__ENCODED_OK(er);
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}
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}
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asn_dec_rval_t
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REAL_decode_oer(const asn_codec_ctx_t *opt_codec_ctx,
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const asn_TYPE_descriptor_t *td,
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const asn_oer_constraints_t *constraints, void **sptr,
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const void *ptr, size_t size) {
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asn_dec_rval_t ok = {RC_OK, 0};
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REAL_t *st;
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uint8_t *buf;
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ssize_t len_len;
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size_t real_body_len;
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(void)opt_codec_ctx;
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if(!constraints) constraints = td->encoding_constraints.oer_constraints;
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if(constraints && constraints->value.width != 0) {
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/* If we're constrained to a narrow float/double representation, we
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* shouldn't have ended up using REAL. Expecting NativeReal. */
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ASN__DECODE_FAILED;
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}
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len_len = oer_fetch_length(ptr, size, &real_body_len);
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if(len_len < 0) ASN__DECODE_FAILED;
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if(len_len == 0) ASN__DECODE_STARVED;
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ptr = (const char *)ptr + len_len;
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size -= len_len;
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if(real_body_len > size) ASN__DECODE_STARVED;
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buf = CALLOC(1, real_body_len + 1);
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if(!buf) ASN__DECODE_FAILED;
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if(!(st = *sptr)) {
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st = (*sptr = CALLOC(1, sizeof(REAL_t)));
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if(!st) {
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FREEMEM(buf);
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ASN__DECODE_FAILED;
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}
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} else {
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FREEMEM(st->buf);
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}
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memcpy(buf, ptr, real_body_len);
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buf[real_body_len] = '\0';
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st->buf = buf;
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st->size = real_body_len;
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ok.consumed = len_len + real_body_len;
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return ok;
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}
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