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Libraries
asn1c
Commits
e7318793
Commit
e7318793
authored
Sep 26, 2004
by
Lev Walkin
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Plain Diff
generic primitive codec added
parent
8e8078aa
Changes
2
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2 changed files
with
150 additions
and
0 deletions
+150
-0
skeletons/ber_codec_prim.c
skeletons/ber_codec_prim.c
+131
-0
skeletons/ber_codec_prim.h
skeletons/ber_codec_prim.h
+19
-0
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skeletons/ber_codec_prim.c
0 → 100644
View file @
e7318793
/*-
* Copyright (c) 2003, 2004 Lev Walkin <vlm@lionet.info>. All rights reserved.
* Redistribution and modifications are permitted subject to BSD license.
*/
#include <asn_internal.h>
#include <ber_codec_prim.h>
#include <assert.h>
#include <errno.h>
/*
* Decode an always-primitive type.
*/
ber_dec_rval_t
ber_decode_primitive
(
asn1_TYPE_descriptor_t
*
td
,
void
**
sptr
,
void
*
buf_ptr
,
size_t
size
,
int
tag_mode
)
{
ASN__PRIMITIVE_TYPE_t
*
st
=
(
ASN__PRIMITIVE_TYPE_t
*
)
*
sptr
;
ber_dec_rval_t
rval
;
ber_tlv_len_t
length
;
/*
* If the structure is not there, allocate it.
*/
if
(
st
==
NULL
)
{
(
void
*
)
st
=
*
sptr
=
CALLOC
(
1
,
sizeof
(
*
st
));
if
(
st
==
NULL
)
{
rval
.
code
=
RC_FAIL
;
rval
.
consumed
=
0
;
return
rval
;
}
}
ASN_DEBUG
(
"Decoding %s as plain primitive (tm=%d)"
,
td
->
name
,
tag_mode
);
/*
* Check tags and extract value length.
*/
rval
=
ber_check_tags
(
td
,
0
,
buf_ptr
,
size
,
tag_mode
,
0
,
&
length
,
0
);
if
(
rval
.
code
!=
RC_OK
)
return
rval
;
ASN_DEBUG
(
"%s length is %d bytes"
,
td
->
name
,
(
int
)
length
);
/*
* Make sure we have this length.
*/
buf_ptr
=
((
char
*
)
buf_ptr
)
+
rval
.
consumed
;
size
-=
rval
.
consumed
;
if
(
length
>
(
ber_tlv_len_t
)
size
)
{
rval
.
code
=
RC_WMORE
;
rval
.
consumed
=
0
;
return
rval
;
}
st
->
buf
=
(
uint8_t
*
)
MALLOC
(
length
+
1
);
if
(
st
->
buf
)
{
st
->
size
=
length
;
}
else
{
rval
.
code
=
RC_FAIL
;
rval
.
consumed
=
0
;
return
rval
;
}
memcpy
(
st
->
buf
,
buf_ptr
,
length
);
st
->
buf
[
length
]
=
'\0'
;
/* Just in case */
rval
.
code
=
RC_OK
;
rval
.
consumed
+=
length
;
ASN_DEBUG
(
"Took %ld/%ld bytes to encode %s"
,
(
long
)
rval
.
consumed
,
(
long
)
length
,
td
->
name
);
return
rval
;
}
/*
* Encode an always-primitive type using DER.
*/
asn_enc_rval_t
der_encode_primitive
(
asn1_TYPE_descriptor_t
*
td
,
void
*
sptr
,
int
tag_mode
,
ber_tlv_tag_t
tag
,
asn_app_consume_bytes_f
*
cb
,
void
*
app_key
)
{
asn_enc_rval_t
erval
;
ASN__PRIMITIVE_TYPE_t
*
st
=
(
ASN__PRIMITIVE_TYPE_t
*
)
sptr
;
ASN_DEBUG
(
"%s %s as a primitive type (tm=%d)"
,
cb
?
"Encoding"
:
"Estimating"
,
td
->
name
,
tag_mode
);
erval
.
encoded
=
der_write_tags
(
td
,
st
->
size
,
tag_mode
,
0
,
tag
,
cb
,
app_key
);
ASN_DEBUG
(
"%s wrote tags %d"
,
td
->
name
,
(
int
)
erval
.
encoded
);
if
(
erval
.
encoded
==
-
1
)
{
erval
.
failed_type
=
td
;
erval
.
structure_ptr
=
sptr
;
return
erval
;
}
if
(
cb
&&
st
->
buf
)
{
if
(
cb
(
st
->
buf
,
st
->
size
,
app_key
)
<
0
)
{
erval
.
encoded
=
-
1
;
erval
.
failed_type
=
td
;
erval
.
structure_ptr
=
sptr
;
return
erval
;
}
}
else
{
assert
(
st
->
buf
||
st
->
size
==
0
);
}
erval
.
encoded
+=
st
->
size
;
return
erval
;
}
void
ASN__PRIMITIVE_TYPE_free
(
asn1_TYPE_descriptor_t
*
td
,
void
*
sptr
,
int
contents_only
)
{
ASN__PRIMITIVE_TYPE_t
*
st
=
(
ASN__PRIMITIVE_TYPE_t
*
)
sptr
;
if
(
!
td
||
!
sptr
)
return
;
ASN_DEBUG
(
"Freeing %s as a primitive type"
,
td
->
name
);
if
(
st
->
buf
)
FREEMEM
(
st
->
buf
);
if
(
!
contents_only
)
FREEMEM
(
st
);
}
skeletons/ber_codec_prim.h
0 → 100644
View file @
e7318793
/*-
* Copyright (c) 2004 Lev Walkin <vlm@lionet.info>. All rights reserved.
* Redistribution and modifications are permitted subject to BSD license.
*/
#ifndef _BER_CODEC_of_PRIMITIVE_TYPE_H_
#define _BER_CODEC_of_PRIMITIVE_TYPE_H_
#include <asn_application.h>
typedef
struct
ASN__PRIMITIVE_TYPE_s
{
uint8_t
*
buf
;
/* Buffer with consecutive primitive encoding bytes */
int
size
;
/* Size of the buffer */
}
ASN__PRIMITIVE_TYPE_t
;
/* Do not use this type directly! */
asn_struct_free_f
ASN__PRIMITIVE_TYPE_free
;
ber_type_decoder_f
ber_decode_primitive
;
der_type_encoder_f
der_encode_primitive
;
#endif
/* _BER_CODEC_of_PRIMITIVE_TYPE_H_ */
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