mirror of https://gerrit.osmocom.org/asn1c
74 lines
1.9 KiB
C
74 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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#ifndef _DER_ENCODER_H_
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#define _DER_ENCODER_H_
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#include <constr_TYPE.h>
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struct asn1_TYPE_descriptor_s; /* Forward declaration */
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/*
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* Type of the return value of the der_encode function.
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*/
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typedef struct der_enc_rval_s {
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/*
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* Number of bytes encoded.
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* -1 indicates failure to encode the structure.
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* In this case, the members below this one are meaningful.
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*/
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ssize_t encoded;
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/*
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* Members meaningful when (encoded == -1), for post-mortem analysis.
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*/
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/* Type which cannot be encoded */
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struct asn1_TYPE_descriptor_s *failed_type;
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/* Pointer to the structure of that type */
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void *structure_ptr;
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} der_enc_rval_t;
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/*
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* The DER encoder of any type. May be invoked by the application.
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*/
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der_enc_rval_t der_encode(struct asn1_TYPE_descriptor_s *type_descriptor,
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void *struct_ptr, /* Structure to be encoded */
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asn_app_consume_bytes_f *consume_bytes_cb,
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void *app_key /* Arbitrary callback argument */
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);
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/*
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* Type of the generic DER encoder.
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*/
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typedef der_enc_rval_t (der_type_encoder_f)(
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struct asn1_TYPE_descriptor_s *type_descriptor,
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void *struct_ptr, /* Structure to be encoded */
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int tag_mode, /* {-1,0,1}: IMPLICIT, no, EXPLICIT */
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ber_tlv_tag_t tag,
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asn_app_consume_bytes_f *consume_bytes_cb, /* Callback */
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void *app_key /* Arbitrary callback argument */
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);
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/*******************************
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* INTERNALLY USEFUL FUNCTIONS *
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*******************************/
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/*
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* Write out leading TL[v] sequence according to the type definition.
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*/
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ssize_t der_write_tags(
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struct asn1_TYPE_descriptor_s *type_descriptor,
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size_t struct_length,
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int tag_mode, /* {-1,0,1}: IMPLICIT, no, EXPLICIT */
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ber_tlv_tag_t tag,
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asn_app_consume_bytes_f *consume_bytes_cb,
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void *app_key
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);
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#endif /* _DER_ENCODER_H_ */
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