OK, found it on my own.
I was in need of automatic type checking of the built in multistring types at
parsing
time, i.e. when doing d2i_X509_TEMPLATE_TYPE(...) an templates for new
structures.
Just in case someone might be interested, i found a solution that works for me.
With some digging the code, i found the template type missing for ASN1
multistring types,
namely ASN1_PRINTABLE, DISPLAYTEXT and DIRECTORYSTRING.
I thing that can be obtained by adding:
#define DEFINE_ASN1_ITEM_TEMPLATE(tname) \
ASN1_ITEM_TEMPLATE(tname##) = ASN1_EX_TEMPLATE_TYPE(0, 0, tname##,
tname##)
DEFINE_ASN1_ITEM_TEMPLATE(DIRECTORYSTRING);
DEFINE_ASN1_ITEM_TEMPLATE(ASN1_PRINTABLE);
DEFINE_ASN1_ITEM_TEMPLATE(DISPLAYTEXT);
in my c source. So the correct types are being checked at parsing time.
The underlying types are all of ASN1_STRING. For use within the program, i
added:
typedef ASN1_STRING DIRECTORYSTRING;
typedef ASN1_STRING ASN1_PRINTABLE;
typedef ASN1_STRING DISPLAYTEXT;
in the headerfile. Together with the mentioned patch, concerning template
parsing,
functionality is a good bit enhaced.
Maybe some OM could review these little changes whether they are ok or should
be revised.
If the former, i would appreciate to see them in the mainstream.
Christian Weber wrote on 10.03.2011 at 18:40:
...
--- C:/wrk/openssl-1.0.0d/crypto/asn1/tasn_dec.c Tue Jun 15
18:25:06 2010
+++ S:/Build/SAK-2.1/openssl-1.0.0d/crypto/asn1/tasn_dec.c Thu Mar
10 01:26:40 2011
@@ -188,6 +188,8 @@
*/
if ((tag != -1) || opt)
{
+ /* If OPTIONAL, assume this is OK Patch 5.2.2010 ChWe */
+ if (opt) return -1;
ASN1err(ASN1_F_ASN1_ITEM_EX_D2I,
ASN1_R_ILLEGAL_OPTIONS_ON_ITEM_TEMPLATE);
goto err;
We wonder if this critical in any aspect? With the patch the lib still
seems to work for us.
TIA
--
Christian Weber
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