-/*
- * Copyright (c) 2017 Lev Walkin <vlm@lionet.info>. All rights reserved.
- * Redistribution and modifications are permitted subject to BSD license.
- */
-#include <asn_internal.h>
-#include <asn_codecs_prim.h>
-
-/*
- * The OER encoder of any type.
- */
-asn_enc_rval_t
-oer_encode(const asn_TYPE_descriptor_t *type_descriptor, const void *struct_ptr,
- asn_app_consume_bytes_f *consume_bytes, void *app_key) {
- ASN_DEBUG("OER encoder invoked for %s", type_descriptor->name);
-
- /*
- * Invoke type-specific encoder.
- */
- return type_descriptor->op->oer_encoder(
- type_descriptor, 0,
- struct_ptr, /* Pointer to the destination structure */
- consume_bytes, app_key);
-}
-
-/*
- * Argument type and callback necessary for oer_encode_to_buffer().
- */
-typedef struct enc_to_buf_arg {
- void *buffer;
- size_t left;
-} enc_to_buf_arg;
-static int
-encode_to_buffer_cb(const void *buffer, size_t size, void *key) {
- enc_to_buf_arg *arg = (enc_to_buf_arg *)key;
-
- if(arg->left < size) return -1; /* Data exceeds the available buffer size */
-
- memcpy(arg->buffer, buffer, size);
- arg->buffer = ((char *)arg->buffer) + size;
- arg->left -= size;
-
- return 0;
-}
-
-/*
- * A variant of the oer_encode() which encodes the data into the provided buffer
- */
-asn_enc_rval_t
-oer_encode_to_buffer(const asn_TYPE_descriptor_t *type_descriptor,
- const asn_oer_constraints_t *constraints,
- const void *struct_ptr, /* Structure to be encoded */
- void *buffer, /* Pre-allocated buffer */
- size_t buffer_size /* Initial buffer size (maximum) */
-) {
- enc_to_buf_arg arg;
- asn_enc_rval_t ec;
-
- arg.buffer = buffer;
- arg.left = buffer_size;
-
- if(type_descriptor->op->oer_encoder == NULL) {
- ec.encoded = -1;
- ec.failed_type = type_descriptor;
- ec.structure_ptr = struct_ptr;
- ASN_DEBUG("OER encoder is not defined for %s",
- type_descriptor->name);
- } else {
- ec = type_descriptor->op->oer_encoder(
- type_descriptor, constraints,
- struct_ptr, /* Pointer to the destination structure */
- encode_to_buffer_cb, &arg);
- if(ec.encoded != -1) {
- assert(ec.encoded == (ssize_t)(buffer_size - arg.left));
- /* Return the encoded contents size */
- }
- }
- return ec;
-}
-
-asn_enc_rval_t
-oer_encode_primitive(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__PRIMITIVE_TYPE_t *st = (const ASN__PRIMITIVE_TYPE_t *)sptr;
- asn_enc_rval_t er = {0, 0, 0};
- ssize_t ret;
-
- (void)constraints;
-
- if(!st) ASN__ENCODE_FAILED;
-
- ASN_DEBUG("Encoding %s (%" ASN_PRI_SIZE " bytes)", td ? td->name : "", st->size);
-
- /*
- * X.696 (08/2015) #27.2
- */
- 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);
- }
-}
-
-static int
-oer__count_bytes(const void *buffer, size_t size, void *bytes_ptr) {
- size_t *bytes = bytes_ptr;
- (void)buffer;
- *bytes += size;
- return 0;
-}
-
-ssize_t
-oer_open_type_put(const asn_TYPE_descriptor_t *td,
- const asn_oer_constraints_t *constraints, const void *sptr,
- asn_app_consume_bytes_f *cb, void *app_key) {
- size_t serialized_byte_count = 0;
- asn_enc_rval_t er = {0,0,0};
- ssize_t len_len;
-
- er = td->op->oer_encoder(td, constraints, sptr, oer__count_bytes,
- &serialized_byte_count);
- if(er.encoded < 0) return -1;
- assert(serialized_byte_count == (size_t)er.encoded);
-
- len_len = oer_serialize_length(serialized_byte_count, cb, app_key);
- if(len_len == -1) return -1;
-
- er = td->op->oer_encoder(td, constraints, sptr, cb, app_key);
- if(er.encoded < 0) return -1;
- assert(serialized_byte_count == (size_t)er.encoded);
-
- return len_len + er.encoded;
-}
-