/* Getting encapsulated TS_TST_INFO object from PKCS7. */
TS_TST_INFO *PKCS7_to_TS_TST_INFO(PKCS7 *token)
{
PKCS7_SIGNED *pkcs7_signed;
PKCS7 *enveloped;
ASN1_TYPE *tst_info_wrapper;
ASN1_OCTET_STRING *tst_info_der;
const unsigned char *p;
if (!PKCS7_type_is_signed(token)) {
TSerr(TS_F_PKCS7_TO_TS_TST_INFO, TS_R_BAD_PKCS7_TYPE);
return NULL;
}
if (PKCS7_get_detached(token)) {
TSerr(TS_F_PKCS7_TO_TS_TST_INFO, TS_R_DETACHED_CONTENT);
return NULL;
}
pkcs7_signed = token->d.sign;
enveloped = pkcs7_signed->contents;
if (OBJ_obj2nid(enveloped->type) != NID_id_smime_ct_TSTInfo) {
TSerr(TS_F_PKCS7_TO_TS_TST_INFO, TS_R_BAD_PKCS7_TYPE);
return NULL;
}
tst_info_wrapper = enveloped->d.other;
if (tst_info_wrapper->type != V_ASN1_OCTET_STRING) {
TSerr(TS_F_PKCS7_TO_TS_TST_INFO, TS_R_BAD_TYPE);
return NULL;
}
tst_info_der = tst_info_wrapper->value.octet_string;
p = tst_info_der->data;
return d2i_TS_TST_INFO(NULL, &p, tst_info_der->length);
}
/* Getting encapsulated TS_TST_INFO object from PKCS7. */
TS_TST_INFO *PKCS7_to_TS_TST_INFO(PKCS7 *token)
{
PKCS7_SIGNED *pkcs7_signed;
PKCS7 *enveloped;
ASN1_TYPE *tst_info_wrapper;
ASN1_OCTET_STRING *tst_info_der;
const unsigned char *p;
if (!PKCS7_type_is_signed(token))
{
TSerr(TS_F_PKCS7_TO_TS_TST_INFO, TS_R_BAD_PKCS7_TYPE);
return NULL;
}
/* Content must be present. */
if (PKCS7_get_detached(token))
{
TSerr(TS_F_PKCS7_TO_TS_TST_INFO, TS_R_DETACHED_CONTENT);
return NULL;
}
/* We have a signed data with content. */
pkcs7_signed = token->d.sign;
enveloped = pkcs7_signed->contents;
if (OBJ_obj2nid(enveloped->type) != NID_id_smime_ct_TSTInfo)
{
TSerr(TS_F_PKCS7_TO_TS_TST_INFO, TS_R_BAD_PKCS7_TYPE);
return NULL;
}
/* We have a DER encoded TST_INFO as the signed data. */
tst_info_wrapper = enveloped->d.other;
if (tst_info_wrapper->type != V_ASN1_OCTET_STRING)
{
TSerr(TS_F_PKCS7_TO_TS_TST_INFO, TS_R_BAD_TYPE);
return NULL;
}
/* We have the correct ASN1_OCTET_STRING type. */
tst_info_der = tst_info_wrapper->value.octet_string;
/* At last, decode the TST_INFO. */
p = tst_info_der->data;
return d2i_TS_TST_INFO(NULL, &p, tst_info_der->length);
}
