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/*
* src/lib/krb5/asn.1/asn1_make.h
*
* Copyright 1994 by the Massachusetts Institute of Technology.
* All Rights Reserved.
*
* Export of this software from the United States of America may
* require a specific license from the United States Government.
* It is the responsibility of any person or organization contemplating
* export to obtain such a license before exporting.
*
* WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
* distribute this software and its documentation for any purpose and
* without fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation, and that
* the name of M.I.T. not be used in advertising or publicity pertaining
* to distribution of the software without specific, written prior
* permission. Furthermore if you modify this software you must label
* your software as modified software and not distribute it in such a
* fashion that it might be confused with the original M.I.T. software.
* M.I.T. makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*/
#ifndef __ASN1_MAKE_H__
#define __ASN1_MAKE_H__
#include "k5-int.h"
#include "krbasn1.h"
#include "asn1buf.h"
/*
Overview
Each of these procedures constructs a subpart of an ASN.1
primitive in a coding buffer.
Operations
asn1_make_etag
asn1_make_sequence
asn1_make_set
asn1_make_tag
asn1_make_string
*/
asn1_error_code asn1_make_etag
(asn1buf *buf,
const asn1_class class,
const asn1_tagnum tagnum,
const unsigned int in_len,
unsigned int *retlen);
/* requires *buf is allocated, in_len is the length of an ASN.1 encoding
which has just been inserted in *buf
modifies *buf, *retlen
effects Inserts an explicit tag with class = class, id# = tag
length = in_len into *buf.
Returns the length of this encoding in *retlen.
Returns ENOMEM if memory runs out. */
asn1_error_code asn1_make_tag
(asn1buf *buf, const asn1_class class,
const asn1_construction construction,
const asn1_tagnum tagnum,
const unsigned int in_len,
unsigned int *retlen);
/* requires *buf is allocated, in_len is the length of an ASN.1 encoding
which has just been inserted in *buf
modifies *buf, *retlen
effects Inserts the encoding of a tag with class = class,
primitive/constructed staus = construction,
id# = tag and length = in_len into *buf.
Returns the length of this encoding in *retlen.
Returns ENOMEM if memory runs out.
Returns ASN1_OVERFLOW if tagnum exceeds the limits of
the implementation. */
asn1_error_code asn1_make_sequence
(asn1buf *buf, const unsigned int seq_len, unsigned int *len);
/* requires *buf is allocated, seq_len is the length of a series of
sequence components which have just been inserted in *buf
modifies *buf, *retlen
effects Inserts the sequence header for a sequence of length seq_len
in *buf. Returns the length of this encoding in *retlen.
Returns ENOMEM if memory runs out. */
asn1_error_code asn1_make_set
(asn1buf *buf, const unsigned int set_len,
unsigned int *retlen);
/* requires *buf is allocated, seq_len is the length of a series of
sequence components which have just been inserted in *buf
modifies *buf, *retlen
effects Inserts the set header for a set of length set_len in *buf.
Returns the length of this encoding in *retlen.
Returns ENOMEM if memory runs out. */
asn1_error_code asn1_make_string
(asn1buf *buf,
const unsigned int len, const char *string,
int *retlen);
/* requires *buf is allocated, len is the length of *string
effects Inserts the encoding of *string (a series of octets) in *buf.
Returns the length of this encoding in *retlen.
Returns ENOMEM if memory runs out. */
/****************************************************************/
/* Private procedures */
/* "helper" procedure for asn1_make_tag */
asn1_error_code asn1_make_length
(asn1buf *buf, const unsigned int in_len,
unsigned int *retlen);
/* requires *buf is allocated, in_len is the length of an ASN.1 encoding
which has just been inserted in *buf
modifies *buf, *retlen
effects inserts length octet(s) for in_len into *buf */
/* "helper" procedure for asn1_make_tag */
asn1_error_code asn1_make_id
(asn1buf *buf,
const asn1_class class,
const asn1_construction construction,
const asn1_tagnum tagnum,
unsigned int *retlen);
/* requires *buf is allocated, class and tagnum are appropriate for
the ASN.1 encoding which has just been inserted in *buf
modifies *buf, *retlen
effects Inserts id octet(s) of class class and tag number tagnum
into *buf */
#endif
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