CMS_get0_type(3) OpenSSL CMS_get0_type(3)NAME
CMS_get0_type, CMS_set1_eContentType, CMS_get0_eContentType - get and set CMS content types
SYNOPSIS
#include <openssl/cms.h>
const ASN1_OBJECT *CMS_get0_type(CMS_ContentInfo *cms);
int CMS_set1_eContentType(CMS_ContentInfo *cms, const ASN1_OBJECT *oid);
const ASN1_OBJECT *CMS_get0_eContentType(CMS_ContentInfo *cms);
DESCRIPTIONCMS_get0_type() returns the content type of a CMS_ContentInfo structure
as and ASN1_OBJECT pointer. An application can then decide how to
process the CMS_ContentInfo structure based on this value.
CMS_set1_eContentType() sets the embedded content type of a
CMS_ContentInfo structure. It should be called with CMS functions with
the CMS_PARTIAL flag and before the structure is finalised, otherwise
the results are undefined.
ASN1_OBJECT *CMS_get0_eContentType() returns a pointer to the embedded
content type.
NOTES
As the 0 implies CMS_get0_type() and CMS_get0_eContentType() return
internal pointers which should not be freed up. CMS_set1_eContentType()
copies the supplied OID and it should be freed up after use.
The ASN1_OBJECT values returned can be converted to an integer NID
value using OBJ_obj2nid(). For the currently supported content types
the following values are returned:
NID_pkcs7_data
NID_pkcs7_signed
NID_pkcs7_digest
NID_id_smime_ct_compressedData:
NID_pkcs7_encrypted
NID_pkcs7_enveloped
RETURN VALUESCMS_get0_type() and CMS_get0_eContentType() return and ASN1_OBJECT
structure.
CMS_set1_eContentType() returns 1 for success or 0 if an error
occurred. The error can be obtained from ERR_get_error(3).
SEE ALSOERR_get_error(3)HISTORYCMS_get0_type(), CMS_set1_eContentType() and CMS_get0_eContentType()
were all first added to OpenSSL 0.9.8
1.0.0j 2008-04-10 CMS_get0_type(3)
