mirror of https://gerrit.osmocom.org/asn1c
85 lines
1.9 KiB
C
85 lines
1.9 KiB
C
/*-
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* Copyright (c) 2003, 2004 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 <constr_SEQUENCE_OF.h>
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#include <asn_SEQUENCE_OF.h>
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/*
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* The DER encoder of the SEQUENCE OF type.
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*/
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der_enc_rval_t
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SEQUENCE_OF_encode_der(asn1_TYPE_descriptor_t *sd, void *ptr,
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int tag_mode, ber_tlv_tag_t tag,
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asn_app_consume_bytes_f *cb, void *app_key) {
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asn1_SET_OF_specifics_t *specs = sd->specifics;
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asn1_SET_OF_element_t *elm = specs->element;
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A_SEQUENCE_OF(void) *list = ptr;
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size_t computed_size = 0;
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ssize_t encoding_size = 0;
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der_enc_rval_t erval;
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int edx;
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ASN_DEBUG("Estimating size of SEQUENCE OF %s", sd->name);
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/*
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* Gather the length of the underlying members sequence.
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*/
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for(edx = 0; edx < list->count; edx++) {
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void *memb_ptr = list->array[edx];
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erval = elm->type->der_encoder(elm->type, memb_ptr,
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0, elm->tag,
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0, 0);
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if(erval.encoded == -1)
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return erval;
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computed_size += erval.encoded;
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}
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/*
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* Encode the TLV for the sequence itself.
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*/
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encoding_size = der_write_tags(sd, computed_size, tag_mode, tag,
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cb, app_key);
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if(encoding_size == -1) {
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erval.encoded = -1;
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erval.failed_type = sd;
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erval.structure_ptr = ptr;
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return erval;
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}
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computed_size += encoding_size;
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if(!cb) {
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erval.encoded = computed_size;
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return erval;
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}
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ASN_DEBUG("Encoding members of SEQUENCE OF %s", sd->name);
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/*
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* Encode all members.
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*/
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for(edx = 0; edx < list->count; edx++) {
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void *memb_ptr = list->array[edx];
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erval = elm->type->der_encoder(elm->type, memb_ptr,
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0, elm->tag,
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cb, app_key);
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if(erval.encoded == -1)
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return erval;
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encoding_size += erval.encoded;
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}
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if(computed_size != (size_t)encoding_size) {
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/*
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* Encoded size is not equal to the computed size.
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*/
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erval.encoded = -1;
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erval.failed_type = sd;
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erval.structure_ptr = ptr;
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} else {
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erval.encoded = computed_size;
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}
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return erval;
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}
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