gnutls_x509_crt_get_extension_info(3) | gnutls | gnutls_x509_crt_get_extension_info(3) |
gnutls_x509_crt_get_extension_info - API function
#include <gnutls/x509.h>
int gnutls_x509_crt_get_extension_info(gnutls_x509_crt_t cert, unsigned indx, void * oid, size_t * oid_size, unsigned int * critical);
This function will return the requested extension OID in the certificate, and the critical flag for it. The extension OID will be stored as a string in the provided buffer. Use gnutls_x509_crt_get_extension() to extract the data.
If the buffer provided is not long enough to hold the output, then
oid_size is updated and GNUTLS_E_SHORT_MEMORY_BUFFER will be
returned. The oid returned will be null terminated, although
oid_size will not account for the trailing null (the latter is not
true for GnuTLS prior to 3.6.0).
On success, GNUTLS_E_SUCCESS (0) is returned, otherwise a negative error code is returned. If you have reached the last extension available GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE will be returned.
Report bugs to <bugs@gnutls.org>.
Home page: https://www.gnutls.org
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