NAME

       gnutls_x509_crt_get_extension_oid - API function

SYNOPSIS

       #include <gnutls/x509.h>

       int  gnutls_x509_crt_get_extension_oid(gnutls_x509_crt_t  cert, unsigned indx, void * oid,
       size_t * oid_size);

ARGUMENTS

       gnutls_x509_crt_t cert
                   should contain a gnutls_x509_crt_t type

       unsigned indx
                   Specifies which extension OID to send. Use (0) to get the first one.

       void * oid  a pointer to a structure to hold the OID (may be null)

       size_t * oid_size
                   initially holds the size of  oid

DESCRIPTION

       This function will return the requested extension OID in the certificate.   The  extension
       OID will be stored as a string in the provided buffer.

       The   oid  returned  will  be null terminated, although  oid_size will not account for the
       trailing null.

RETURNS

       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.

REPORTING BUGS

       Report bugs to <bugs@gnutls.org>.
       Home page: https://www.gnutls.org

COPYRIGHT

       Copyright © 2001-2023 Free Software Foundation, Inc., and others.
       Copying and distribution of this file, with or without modification, are permitted in  any
       medium without royalty provided the copyright notice and this notice are preserved.

SEE ALSO

       The   full   documentation  for  gnutls  is  maintained  as  a  Texinfo  manual.   If  the
       /usr/share/doc/gnutls/ directory does not contain the HTML form visit

       https://www.gnutls.org/manual/