+++ /dev/null
-/*
- * Copyright (c) 2017 Lev Walkin <vlm@lionet.info>.
- * All rights reserved.
- * Redistribution and modifications are permitted subject to BSD license.
- */
-#ifndef ASN_DISABLE_OER_SUPPORT
-
-#include <asn_internal.h>
-#include <OCTET_STRING.h>
-#include <errno.h>
-
-asn_dec_rval_t
-OCTET_STRING_decode_oer(const asn_codec_ctx_t *opt_codec_ctx,
- const asn_TYPE_descriptor_t *td,
- const asn_oer_constraints_t *constraints, void **sptr,
- const void *ptr, size_t size) {
- const asn_OCTET_STRING_specifics_t *specs =
- td->specifics ? (const asn_OCTET_STRING_specifics_t *)td->specifics
- : &asn_SPC_OCTET_STRING_specs;
- OCTET_STRING_t *st = (OCTET_STRING_t *)*sptr;
- const asn_oer_constraints_t *cts =
- constraints ? constraints : td->encoding_constraints.oer_constraints;
- ssize_t ct_size = cts ? cts->size : -1;
- asn_dec_rval_t rval = {RC_OK, 0};
- size_t expected_length = 0;
-
- size_t unit_bytes;
- switch(specs->subvariant) {
- default:
- case ASN_OSUBV_BIT:
- ASN_DEBUG("Invalid use of OCTET STRING to decode BIT STRING");
- ASN__DECODE_FAILED;
- case ASN_OSUBV_ANY:
- /* Fall through */
- case ASN_OSUBV_STR:
- unit_bytes = 1;
- break;
- case ASN_OSUBV_U16:
- unit_bytes = 2;
- break;
- case ASN_OSUBV_U32:
- unit_bytes = 4;
- break;
- }
-
- (void)opt_codec_ctx;
-
- if(!st) {
- st = (OCTET_STRING_t *)(*sptr = CALLOC(1, specs->struct_size));
- if(!st) ASN__DECODE_FAILED;
- }
-
- if(ct_size >= 0) {
- expected_length = unit_bytes * ct_size;
- } else {
- /*
- * X.696 (08/2015) #27.2
- * Encode length determinant as _number of octets_, but only
- * if upper bound is not equal to lower bound.
- */
- ssize_t len_len = oer_fetch_length(ptr, size, &expected_length);
- if(len_len > 0) {
- rval.consumed = len_len;
- ptr = (const char *)ptr + len_len;
- size -= len_len;
- } else if(len_len == 0) {
- ASN__DECODE_STARVED;
- } else if(len_len < 0) {
- ASN__DECODE_FAILED;
- }
-
- if(expected_length % unit_bytes != 0) {
- ASN_DEBUG(
- "Data size %" ASN_PRI_SIZE " bytes is not consistent with multiplier %" ASN_PRI_SIZE "",
- expected_length, unit_bytes);
- ASN__DECODE_FAILED;
- }
- }
-
- if(size < expected_length) {
- ASN__DECODE_STARVED;
- } else {
- uint8_t *buf = MALLOC(expected_length + 1);
- if(buf == NULL) {
- ASN__DECODE_FAILED;
- } else {
- memcpy(buf, ptr, expected_length);
- buf[expected_length] = '\0';
- }
- FREEMEM(st->buf);
- st->buf = buf;
- st->size = expected_length;
-
- rval.consumed += expected_length;
- return rval;
- }
-}
-
-/*
- * Encode as Canonical OER.
- */
-asn_enc_rval_t
-OCTET_STRING_encode_oer(const asn_TYPE_descriptor_t *td,
- const asn_oer_constraints_t *constraints,
- const void *sptr, asn_app_consume_bytes_f *cb,
- void *app_key) {
- const asn_OCTET_STRING_specifics_t *specs =
- td->specifics ? (const asn_OCTET_STRING_specifics_t *)td->specifics
- : &asn_SPC_OCTET_STRING_specs;
- const OCTET_STRING_t *st = (const OCTET_STRING_t *)sptr;
- const asn_oer_constraints_t *cts =
- constraints ? constraints : td->encoding_constraints.oer_constraints;
- ssize_t ct_size = cts ? cts->size : -1;
- asn_enc_rval_t er = {0, 0, 0};
-
- if(!st) ASN__ENCODE_FAILED;
-
- ASN_DEBUG("Encoding %s %" ASN_PRI_SIZE " as OCTET STRING", td ? td->name : "", st->size);
-
- if(ct_size >= 0) {
- /*
- * Check that available data matches the constraint
- */
- size_t unit_bytes;
- switch(specs->subvariant) {
- default:
- case ASN_OSUBV_BIT:
- ASN_DEBUG("Invalid use of OCTET STRING to encode BIT STRING");
- ASN__ENCODE_FAILED;
- case ASN_OSUBV_ANY:
- /* Fall through */
- case ASN_OSUBV_STR:
- unit_bytes = 1;
- break;
- case ASN_OSUBV_U16:
- unit_bytes = 2;
- break;
- case ASN_OSUBV_U32:
- unit_bytes = 4;
- break;
- }
-
- if(st->size != unit_bytes * (size_t)ct_size) {
- ASN_DEBUG(
- "Trying to encode %s (%" ASN_PRI_SIZE " bytes) which doesn't fit SIZE "
- "constraint (%" ASN_PRI_SIZE ")",
- td->name, st->size, ct_size);
- ASN__ENCODE_FAILED;
- }
- } else {
- /*
- * X.696 (08/2015) #27.2
- * Encode length determinant as _number of octets_, but only
- * if upper bound is not equal to lower bound.
- */
- ssize_t ret = oer_serialize_length(st->size, cb, app_key);
- if(ret < 0) {
- ASN__ENCODE_FAILED;
- }
- er.encoded += ret;
- }
-
- er.encoded += st->size;
- if(cb(st->buf, st->size, app_key) < 0) {
- ASN__ENCODE_FAILED;
- } else {
- ASN__ENCODED_OK(er);
- }
-}
-
-#endif /* ASN_DISABLE_OER_SUPPORT */