Vadim Fedukovich schrieb:
>
> On Tue, Jun 11, 2002 at 01:46:40PM +0200, Michael Bell wrote:
> > Hi,
> >
> > I start a simple implementation of othername only for strings in the
> > subject alternative name. Actually I have a problem with the resolving
> > of the ASN1_TYPE.
> >
> > OTHERNAME is defined like this in crypto/x509v3/x509v3.h:
> >
> > typedef struct otherName_st {
> > ASN1_OBJECT *type_id;
> > ASN1_TYPE *value;
> > } OTHERNAME;
> >
> > The problem is that I must do a typecast to store a special type in
> > *value but I must know the type in crypto/asn1/tasn_enc.c where
> > ASN1_item_ex_i2d must calculate the length of the sequence.
> >
> > The code crashs in the loop after /* First work out sequence content
> > length */ at the second iteration in the line
> >
> > seqcontlen += ASN1_template_i2d(pseqval, NULL, seqtt);
> >
> > Is there a trick to get the type from the structure or must I change
> > x509v3.h (ASN1_TYPE --> ASN1_CHOICE) and define the supported
> > ASN1-types?
>
> "Policy" certificate extension generator may be an example to do this.
> Naina package: http://www.unity.net/~vf/naina_r1.tgz
Not really. The problem is that value can be every (!!!) ASN1_TYPE. So
is there a difference in the resulting ASN1 if I use an ASN1_CHOICE to
build the structure?
typedef struct otherName_st {
ASN1_OBJECT *type_id;
ASN1_CHOICE *value;
}
ASN1_CHOICE(OTHERNAME) = {
...
} ASN1_CHOICE_END(OTHERNAME)
(including new unions etc.)
Is this compatible with ASN1_TYPE *value?
Michael
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