Skip to content
Projects
Groups
Snippets
Help
Loading...
Help
Support
Keyboard shortcuts
?
Submit feedback
Contribute to GitLab
Sign in / Register
Toggle navigation
A
asn1c
Project overview
Project overview
Details
Activity
Releases
Repository
Repository
Files
Commits
Branches
Tags
Contributors
Graph
Compare
Issues
0
Issues
0
List
Boards
Labels
Milestones
Merge Requests
0
Merge Requests
0
CI / CD
CI / CD
Pipelines
Jobs
Schedules
Analytics
Analytics
CI / CD
Repository
Value Stream
Wiki
Wiki
Snippets
Snippets
Members
Members
Collapse sidebar
Close sidebar
Activity
Graph
Create a new issue
Jobs
Commits
Issue Boards
Open sidebar
Libraries
asn1c
Commits
8d127875
Commit
8d127875
authored
Sep 04, 2004
by
Lev Walkin
Browse files
Options
Browse Files
Download
Email Patches
Plain Diff
support for ANY type decoding
parent
7210fdb8
Changes
1
Hide whitespace changes
Inline
Side-by-side
Showing
1 changed file
with
55 additions
and
31 deletions
+55
-31
skeletons/OCTET_STRING.c
skeletons/OCTET_STRING.c
+55
-31
No files found.
skeletons/OCTET_STRING.c
View file @
8d127875
...
...
@@ -51,11 +51,12 @@ asn1_TYPE_descriptor_t asn1_DEF_OCTET_STRING = {
} while(0)
#define APPEND(bufptr, bufsize) do { \
size_t _bs = (bufsize); \
size_t _ns = ctx->step;
/* Allocated */
\
if(_ns <= (size_t)(st->size +
bufsize)) {
\
if(_ns <= (size_t)(st->size +
_bs)) {
\
void *ptr; \
do { _ns = _ns ? _ns<<2 : 16; } \
while(_ns <= (size_t)(st->size + bufsize
)); \
while(_ns <= (size_t)(st->size + _bs
)); \
ptr = REALLOC(st->buf, _ns); \
if(ptr) { \
st->buf = (uint8_t *)ptr; \
...
...
@@ -64,8 +65,8 @@ asn1_TYPE_descriptor_t asn1_DEF_OCTET_STRING = {
RETURN(RC_FAIL); \
} \
} \
memcpy(st->buf + st->size, bufptr,
bufsize
); \
st->size +=
bufsize
; \
memcpy(st->buf + st->size, bufptr,
_bs
); \
st->size +=
_bs
; \
if(st->size < 0) \
/* Why even care?.. JIC */
\
RETURN(RC_FAIL); \
...
...
@@ -124,12 +125,6 @@ _new_stack() {
if
(
st
==
NULL
)
return
NULL
;
st
->
cur_ptr
=
_add_stack_el
(
st
);
if
(
st
->
cur_ptr
==
NULL
)
{
FREEMEM
(
st
);
return
NULL
;
}
return
st
;
}
...
...
@@ -142,20 +137,16 @@ OCTET_STRING_decode_ber(asn1_TYPE_descriptor_t *td,
OCTET_STRING_t
*
st
=
(
OCTET_STRING_t
*
)
*
os_structure
;
ber_dec_rval_t
rval
;
ber_dec_ctx_t
*
ctx
;
ber_tlv_tag_t
terminal_tag
;
/* Inner tag for constructed types */
ssize_t
consumed_myself
=
0
;
struct
_stack
*
stck
;
/* A stack structure */
struct
_stack_el
*
sel
;
/* Stack element */
int
tlv_constr
;
/*
* This is a some sort of a hack.
* The OCTET STRING decoder is being used in BIT STRING mode.
*/
int
is_bit_str
=
(
td
->
specifics
==
(
void
*
)
-
1
);
int
is_bit_str
=
0
;
/* See below under switch(td->specifics) */
int
is_ANY_type
=
0
;
/* See below under switch(td->specifics) */
ASN_DEBUG
(
"Decoding %s as %s (%ld)"
,
td
->
name
,
is_bit_str
?
"BIT STRING"
:
"OCTET STRING"
,
(
long
)
size
);
td
->
name
,
"OCTET STRING"
,
(
long
)
size
);
/*
* Create the string if does not exist.
...
...
@@ -169,6 +160,25 @@ OCTET_STRING_decode_ber(asn1_TYPE_descriptor_t *td,
/* Restore parsing context */
ctx
=
&
st
->
_ber_dec_ctx
;
switch
((
int
)
td
->
specifics
)
{
case
0
:
terminal_tag
=
asn1_DEF_OCTET_STRING_tags
[
0
];
/* [U4] */
break
;
case
-
1
:
/* BIT STRING */
/*
* This is some sort of a hack.
* The OCTET STRING decoder is being used in BIT STRING mode.
*/
is_bit_str
=
1
;
terminal_tag
=
ASN_TAG_CLASS_UNIVERSAL
|
(
3
<<
2
);
break
;
default:
/* Just in case; fall through */
case
1
:
/* ANY type */
is_ANY_type
=
1
;
terminal_tag
=
-
1
;
break
;
}
switch
(
ctx
->
phase
)
{
case
0
:
/*
...
...
@@ -191,6 +201,7 @@ OCTET_STRING_decode_ber(asn1_TYPE_descriptor_t *td,
ctx
->
ptr
=
_new_stack
();
if
(
ctx
->
ptr
)
{
(
void
*
)
stck
=
ctx
->
ptr
;
#if 0
if(ctx->left < 0) {
stck->cur_ptr->want_nulls = -ctx->left;
stck->cur_ptr->left = -1;
...
...
@@ -198,10 +209,12 @@ OCTET_STRING_decode_ber(asn1_TYPE_descriptor_t *td,
stck->cur_ptr->want_nulls = 0;
stck->cur_ptr->left = ctx->left;
}
ASN_DEBUG
(
"
Expectation left=%d wn=%d adde
d"
,
ASN_DEBUG("
+EXPECT1 left=%d wn=%
d",
stck->cur_ptr->left,
stck->cur_ptr->want_nulls);
#endif
if
(
is_bit_str
)
{
/* Number of meaningless tail bits */
APPEND
(
"
\0
"
,
1
);
}
}
else
{
...
...
@@ -212,11 +225,11 @@ OCTET_STRING_decode_ber(asn1_TYPE_descriptor_t *td,
* Jump into stackless primitive decoding.
*/
_CH_PHASE
(
ctx
,
3
);
if
(
is_ANY_type
)
APPEND
(
buf_ptr
,
rval
.
consumed
);
ADVANCE
(
rval
.
consumed
);
goto
phase3
;
}
ADVANCE
(
rval
.
consumed
);
NEXT_PHASE
(
ctx
);
/* Fall through */
case
1
:
...
...
@@ -231,6 +244,9 @@ OCTET_STRING_decode_ber(asn1_TYPE_descriptor_t *td,
ber_tlv_len_t
tlv_len
;
ssize_t
tl
,
ll
;
ASN_DEBUG
(
"fetch tag(size=%d), %sstack, left=%d, want0=%d"
,
(
int
)
size
,
sel
?
""
:
"!"
,
sel
?
sel
->
left
:
0
,
sel
?
sel
->
want_nulls
:
0
);
tl
=
ber_fetch_tag
(
buf_ptr
,
size
,
&
tlv_tag
);
switch
(
tl
)
{
case
-
1
:
RETURN
(
RC_FAIL
);
...
...
@@ -241,8 +257,9 @@ OCTET_STRING_decode_ber(asn1_TYPE_descriptor_t *td,
ll
=
ber_fetch_length
(
tlv_constr
,
(
char
*
)
buf_ptr
+
tl
,
size
-
tl
,
&
tlv_len
);
ASN_DEBUG
(
"Got tag=%s, tl=%d, len=%d, ll=%d, {%d, %d}"
,
ber_tlv_tag_string
(
tlv_tag
),
tl
,
tlv_len
,
ll
,
ASN_DEBUG
(
"Got tag=%s, tc=%d, size=%d, tl=%d, len=%d, ll=%d, {%d, %d}"
,
ber_tlv_tag_string
(
tlv_tag
),
tlv_constr
,
(
int
)
size
,
tl
,
tlv_len
,
ll
,
((
uint8_t
*
)
buf_ptr
)[
0
],
((
uint8_t
*
)
buf_ptr
)[
1
]);
switch
(
ll
)
{
...
...
@@ -250,30 +267,36 @@ OCTET_STRING_decode_ber(asn1_TYPE_descriptor_t *td,
case
0
:
RETURN
(
RC_WMORE
);
}
if
(
sel
->
want_nulls
if
(
sel
&&
sel
->
want_nulls
&&
((
uint8_t
*
)
buf_ptr
)[
0
]
==
0
&&
((
uint8_t
*
)
buf_ptr
)[
1
]
==
0
)
{
ADVANCE
(
2
);
if
(
is_ANY_type
)
APPEND
(
"
\0\0
"
,
2
);
ASN_DEBUG
(
"Eat EOC; wn=%d--"
,
sel
->
want_nulls
);
sel
->
want_nulls
--
;
if
(
sel
->
want_nulls
==
0
)
{
/* Move to the next expectation */
sel
=
stck
->
cur_ptr
=
sel
->
prev
;
if
(
sel
==
NULL
)
{
ADVANCE
(
2
);
if
(
sel
==
NULL
)
break
;
}
}
if
(
sel
->
want_nulls
)
{
/*
* Simulate while(TRUE) for this loop.
* This is necessary to fetch the next
* "end of content" expectation.
* expectation after current "end of content",
* for which tlv_constr is 0.
*/
ADVANCE
(
2
);
tlv_constr
=
1
;
continue
;
}
}
else
if
(
tlv_tag
!=
td
->
tags
[
td
->
tags_count
-
1
])
{
continue
;
}
else
if
(
tlv_tag
!=
terminal_tag
&&
terminal_tag
!=
(
ber_tlv_tag_t
)
-
1
)
{
char
buf
[
2
][
32
];
ber_tlv_tag_snprint
(
tlv_tag
,
buf
[
0
],
sizeof
(
buf
[
0
]));
...
...
@@ -291,12 +314,13 @@ OCTET_STRING_decode_ber(asn1_TYPE_descriptor_t *td,
if
(
sel
)
{
sel
->
want_nulls
=
(
tlv_len
==-
1
);
sel
->
left
=
tlv_len
;
ASN_DEBUG
(
"
Expectation %d %d adde
d"
,
ASN_DEBUG
(
"
+EXPECT2 left=%d wn=%
d"
,
sel
->
left
,
sel
->
want_nulls
);
}
else
{
RETURN
(
RC_FAIL
);
}
if
(
is_ANY_type
)
APPEND
(
buf_ptr
,
tl
+
ll
);
ADVANCE
(
tl
+
ll
);
}
while
(
tlv_constr
);
if
(
sel
==
NULL
)
{
...
...
Write
Preview
Markdown
is supported
0%
Try again
or
attach a new file
Attach a file
Cancel
You are about to add
0
people
to the discussion. Proceed with caution.
Finish editing this message first!
Cancel
Please
register
or
sign in
to comment