static unsigned char
asn1_id_decode(struct asn1_ctx *ctx,
unsigned int *cls, unsigned int *con, unsigned int *tag)
{
unsigned char ch;
if (!asn1_octet_decode(ctx, &ch))
return 0;
*cls = (ch & 0xC0) >> 6;
*con = (ch & 0x20) >> 5;
*tag = (ch & 0x1F);
if (*tag == 0x1F) {
if (!asn1_tag_decode(ctx, tag))
return 0;
}
return 1;
}
/*
* NAME: asn1_id_decode
* SYNOPSIS: int asn1_id_decode
* (
* ASN1_SCK *asn1,
* guint *cls,
* guint *con,
* guint *tag
* )
* DESCRIPTION: Decodes an identifier.
* RETURNS: ASN1_ERR value (ASN1_ERR_NOERROR on success)
*/
int
asn1_id_decode(ASN1_SCK *asn1, guint *cls, guint *con, guint *tag)
{
int ret;
guchar ch;
*tag = 0;
ret = asn1_octet_decode (asn1, &ch);
if (ret != ASN1_ERR_NOERROR)
return ret;
*cls = (ch & 0xC0) >> 6;
*con = (ch & 0x20) >> 5;
*tag = (ch & 0x1F);
if (*tag == 0x1F) {
ret = asn1_tag_decode (asn1, tag);
if (ret != ASN1_ERR_NOERROR)
return ret;
}
return ASN1_ERR_NOERROR;
}
