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protection against integer wrap-around; also asn1_* renamed into asn_* 

git-svn-id: https://asn1c.svn.sourceforge.net/svnroot/asn1c/trunk@440 59561ff5-6e30-0410-9f3c-9617f08c8826
This commit is contained in:
vlm 2004-09-29 13:20:14 +00:00
parent 0229643efe
commit 7b75d980b7
1 changed files with 28 additions and 21 deletions
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49
skeletons/OCTET_STRING.c
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@ -10,10 +10,10 @@
/*
* OCTET STRING basic type description.
*/
static ber_tlv_tag_t asn1_DEF_OCTET_STRING_tags[] = {
static ber_tlv_tag_t asn_DEF_OCTET_STRING_tags[] = {
(ASN_TAG_CLASS_UNIVERSAL | (4 << 2))
};
asn1_TYPE_descriptor_t asn1_DEF_OCTET_STRING = {
asn_TYPE_descriptor_t asn_DEF_OCTET_STRING = {
"OCTET STRING",
OCTET_STRING_free,
OCTET_STRING_print, /* non-ascii stuff, generally */
@ -23,12 +23,12 @@ asn1_TYPE_descriptor_t asn1_DEF_OCTET_STRING = {
0, /* Not implemented yet */
OCTET_STRING_encode_xer,
0, /* Use generic outmost tag fetcher */
asn1_DEF_OCTET_STRING_tags,
sizeof(asn1_DEF_OCTET_STRING_tags)
/ sizeof(asn1_DEF_OCTET_STRING_tags[0]),
asn1_DEF_OCTET_STRING_tags, /* Same as above */
sizeof(asn1_DEF_OCTET_STRING_tags)
/ sizeof(asn1_DEF_OCTET_STRING_tags[0]),
asn_DEF_OCTET_STRING_tags,
sizeof(asn_DEF_OCTET_STRING_tags)
/ sizeof(asn_DEF_OCTET_STRING_tags[0]),
asn_DEF_OCTET_STRING_tags, /* Same as above */
sizeof(asn_DEF_OCTET_STRING_tags)
/ sizeof(asn_DEF_OCTET_STRING_tags[0]),
0, 0, /* No members */
0 /* No specifics */
};
@ -151,11 +151,12 @@ _new_stack() {
* Decode OCTET STRING type.
*/
ber_dec_rval_t
OCTET_STRING_decode_ber(asn1_TYPE_descriptor_t *td,
OCTET_STRING_decode_ber(asn_codec_ctx_t *opt_codec_ctx,
asn_TYPE_descriptor_t *td,
void **os_structure, void *buf_ptr, size_t size, int tag_mode) {
OCTET_STRING_t *st = (OCTET_STRING_t *)*os_structure;
ber_dec_rval_t rval;
ber_dec_ctx_t *ctx;
asn_struct_ctx_t *ctx;
ssize_t consumed_myself = 0;
struct _stack *stck; /* A stack structure */
struct _stack_el *sel = 0; /* Stack element */
@ -181,14 +182,14 @@ OCTET_STRING_decode_ber(asn1_TYPE_descriptor_t *td,
}
/* Restore parsing context */
ctx = &st->_ber_dec_ctx;
ctx = &st->_asn_ctx;
switch(ctx->phase) {
case 0:
/*
* Check tags.
*/
rval = ber_check_tags(td, ctx,
rval = ber_check_tags(opt_codec_ctx, td, ctx,
buf_ptr, size, tag_mode, -1,
&ctx->left, &tlv_constr);
if(rval.code != RC_OK) {
@ -349,14 +350,20 @@ OCTET_STRING_decode_ber(asn1_TYPE_descriptor_t *td,
RETURN(RC_FAIL);
}
tlvl = tl + ll; /* Combined length of T and L encoding */
if((tlv_len + tlvl) < 0) {
/* tlv_len value is too big */
ASN_DEBUG("TLV encoding + length (%ld) is too big",
(long)tlv_len);
RETURN(RC_FAIL);
}
/*
* Append a new expectation.
*/
sel = OS__add_stack_el(stck);
if(!sel) RETURN(RC_FAIL);
tlvl = tl + ll; /* Combined length of T and L encoding */
sel->tag = tlv_tag;
sel->want_nulls = (tlv_len==-1);
@ -480,7 +487,7 @@ OCTET_STRING_decode_ber(asn1_TYPE_descriptor_t *td,
* Encode OCTET STRING type using DER.
*/
asn_enc_rval_t
OCTET_STRING_encode_der(asn1_TYPE_descriptor_t *td, void *ptr,
OCTET_STRING_encode_der(asn_TYPE_descriptor_t *td, void *ptr,
int tag_mode, ber_tlv_tag_t tag,
asn_app_consume_bytes_f *cb, void *app_key) {
asn_enc_rval_t erval;
@ -552,7 +559,7 @@ OCTET_STRING_encode_der(asn1_TYPE_descriptor_t *td, void *ptr,
}
asn_enc_rval_t
OCTET_STRING_encode_xer(asn1_TYPE_descriptor_t *td, void *sptr,
OCTET_STRING_encode_xer(asn_TYPE_descriptor_t *td, void *sptr,
int ilevel, enum xer_encoder_flags_e flags,
asn_app_consume_bytes_f *cb, void *app_key) {
static const char *h2c = "0123456789ABCDEF";
@ -617,7 +624,7 @@ OCTET_STRING_encode_xer(asn1_TYPE_descriptor_t *td, void *sptr,
}
asn_enc_rval_t
OCTET_STRING_encode_xer_ascii(asn1_TYPE_descriptor_t *td, void *sptr,
OCTET_STRING_encode_xer_ascii(asn_TYPE_descriptor_t *td, void *sptr,
int ilevel, enum xer_encoder_flags_e flags,
asn_app_consume_bytes_f *cb, void *app_key) {
const OCTET_STRING_t *st = (const OCTET_STRING_t *)sptr;
@ -636,7 +643,7 @@ OCTET_STRING_encode_xer_ascii(asn1_TYPE_descriptor_t *td, void *sptr,
}
int
OCTET_STRING_print(asn1_TYPE_descriptor_t *td, const void *sptr, int ilevel,
OCTET_STRING_print(asn_TYPE_descriptor_t *td, const void *sptr, int ilevel,
asn_app_consume_bytes_f *cb, void *app_key) {
static const char *h2c = "0123456789ABCDEF";
const OCTET_STRING_t *st = (const OCTET_STRING_t *)sptr;
@ -677,7 +684,7 @@ OCTET_STRING_print(asn1_TYPE_descriptor_t *td, const void *sptr, int ilevel,
}
int
OCTET_STRING_print_ascii(asn1_TYPE_descriptor_t *td, const void *sptr,
OCTET_STRING_print_ascii(asn_TYPE_descriptor_t *td, const void *sptr,
int ilevel, asn_app_consume_bytes_f *cb, void *app_key) {
const OCTET_STRING_t *st = (const OCTET_STRING_t *)sptr;
@ -692,9 +699,9 @@ OCTET_STRING_print_ascii(asn1_TYPE_descriptor_t *td, const void *sptr,
}
void
OCTET_STRING_free(asn1_TYPE_descriptor_t *td, void *sptr, int contents_only) {
OCTET_STRING_free(asn_TYPE_descriptor_t *td, void *sptr, int contents_only) {
OCTET_STRING_t *st = (OCTET_STRING_t *)sptr;
struct _stack *stck = (struct _stack *)st->_ber_dec_ctx.ptr;
struct _stack *stck = (struct _stack *)st->_asn_ctx.ptr;
if(!td || !st)
return;