int CMS_set_detached(CMS_ContentInfo *cms, int detached)
{
ASN1_OCTET_STRING **pos;
pos = CMS_get0_content(cms);
if (!pos)
return 0;
if (detached) {
if (*pos) {
ASN1_OCTET_STRING_free(*pos);
*pos = NULL;
}
return 1;
}
if (!*pos)
*pos = ASN1_OCTET_STRING_new();
if (*pos) {
/*
* NB: special flag to show content is created and not read in.
*/
(*pos)->flags |= ASN1_STRING_FLAG_CONT;
return 1;
}
CMSerr(CMS_F_CMS_SET_DETACHED, ERR_R_MALLOC_FAILURE);
return 0;
}
static int check_content(CMS_ContentInfo *cms)
{
ASN1_OCTET_STRING **pos = CMS_get0_content(cms);
if (!pos || !*pos) {
CMSerr(CMS_F_CHECK_CONTENT, CMS_R_NO_CONTENT);
return 0;
}
return 1;
}
int CMS_is_detached(CMS_ContentInfo *cms)
{
ASN1_OCTET_STRING **pos;
pos = CMS_get0_content(cms);
if (!pos)
return -1;
if (*pos)
return 0;
return 1;
}
static int openssl_cms_content(lua_State *L)
{
CMS_ContentInfo *cms = CHECK_OBJECT(1, CMS_ContentInfo, "openssl.cms");
ASN1_OCTET_STRING** content = CMS_get0_content(cms);
if (content && *content)
{
lua_pushnil(L);
return 1;
}
lua_pushnil(L);
return 1;
}
BIO *cms_content_bio(CMS_ContentInfo *cms)
{
ASN1_OCTET_STRING **pos = CMS_get0_content(cms);
if (!pos)
return NULL;
/* If content detached data goes nowhere: create NULL BIO */
if (!*pos)
return BIO_new(BIO_s_null());
/* If content not detached and created return memory BIO
*/
if (!*pos || ((*pos)->flags == ASN1_STRING_FLAG_CONT))
return BIO_new(BIO_s_mem());
/* Else content was read in: return read only BIO for it */
return BIO_new_mem_buf((*pos)->data, (*pos)->length);
}
int CMS_stream(unsigned char ***boundary, CMS_ContentInfo *cms)
{
ASN1_OCTET_STRING **pos;
pos = CMS_get0_content(cms);
if (pos == NULL)
return 0;
if (*pos == NULL)
*pos = ASN1_OCTET_STRING_new();
if (*pos != NULL) {
(*pos)->flags |= ASN1_STRING_FLAG_NDEF;
(*pos)->flags &= ~ASN1_STRING_FLAG_CONT;
*boundary = &(*pos)->data;
return 1;
}
CMSerr(CMS_F_CMS_STREAM, ERR_R_MALLOC_FAILURE);
return 0;
}
int CMS_dataFinal(CMS_ContentInfo *cms, BIO *cmsbio)
{
ASN1_OCTET_STRING **pos = CMS_get0_content(cms);
if (!pos)
return 0;
/* If ebmedded content find memory BIO and set content */
if (*pos && ((*pos)->flags & ASN1_STRING_FLAG_CONT))
{
BIO *mbio;
unsigned char *cont;
long contlen;
mbio = BIO_find_type(cmsbio, BIO_TYPE_MEM);
if (!mbio)
{
CMSerr(CMS_F_CMS_DATAFINAL, CMS_R_CONTENT_NOT_FOUND);
return 0;
}
contlen = BIO_get_mem_data(mbio, &cont);
/* Set bio as read only so its content can't be clobbered */
BIO_set_flags(mbio, BIO_FLAGS_MEM_RDONLY);
BIO_set_mem_eof_return(mbio, 0);
ASN1_STRING_set0(*pos, cont, contlen);
(*pos)->flags &= ~ASN1_STRING_FLAG_CONT;
}
switch (OBJ_obj2nid(cms->contentType))
{
case NID_pkcs7_data:
case NID_pkcs7_enveloped:
case NID_pkcs7_encrypted:
case NID_id_smime_ct_compressedData:
/* Nothing to do */
return 1;
case NID_pkcs7_signed:
return cms_SignedData_final(cms, cmsbio);
case NID_pkcs7_digest:
return cms_DigestedData_do_final(cms, cmsbio, 0);
default:
CMSerr(CMS_F_CMS_DATAFINAL, CMS_R_UNSUPPORTED_TYPE);
return 0;
}
}
