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/*-
* Copyright (c) 2003, 2004 Lev Walkin <vlm@lionet.info>. All rights reserved.
* Redistribution and modifications are permitted subject to BSD license.
*/
#ifndef _DER_ENCODER_H_
#define _DER_ENCODER_H_
#include <constr_TYPE.h>
struct asn1_TYPE_descriptor_s; /* Forward declaration */
/*
* Type of the return value of the der_encode function.
*/
typedef struct der_enc_rval_s {
/*
* Number of bytes encoded.
* -1 indicates failure to encode the structure.
* In this case, the members below this one are meaningful.
*/
ssize_t encoded;
/*
* Members meaningful when (encoded == -1), for post-mortem analysis.
*/
/* Type which cannot be encoded */
struct asn1_TYPE_descriptor_s *failed_type;
/* Pointer to the structure of that type */
void *structure_ptr;
} der_enc_rval_t;
/*
* The DER encoder of any type. May be invoked by the application.
*/
der_enc_rval_t der_encode(struct asn1_TYPE_descriptor_s *type_descriptor,
void *struct_ptr, /* Structure to be encoded */
asn_app_consume_bytes_f *consume_bytes_cb,
void *app_key /* Arbitrary callback argument */
);
/*
* Type of the generic DER encoder.
*/
typedef der_enc_rval_t (der_type_encoder_f)(
struct asn1_TYPE_descriptor_s *type_descriptor,
void *struct_ptr, /* Structure to be encoded */
int tag_mode, /* {-1,0,1}: IMPLICIT, no, EXPLICIT */
ber_tlv_tag_t tag,
asn_app_consume_bytes_f *consume_bytes_cb, /* Callback */
void *app_key /* Arbitrary callback argument */
);
/*******************************
* INTERNALLY USEFUL FUNCTIONS *
*******************************/
/*
* Write out leading TL[v] sequence according to the type definition.
*/
ssize_t der_write_tags(
struct asn1_TYPE_descriptor_s *type_descriptor,
size_t struct_length,
int tag_mode, /* {-1,0,1}: IMPLICIT, no, EXPLICIT */
ber_tlv_tag_t tag,
asn_app_consume_bytes_f *consume_bytes_cb,
void *app_key
);
#endif /* _DER_ENCODER_H_ */
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