Provided by: gnutls-doc_3.6.9-5ubuntu1_all bug


       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);


       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

       size_t * oid_size
                   initially holds the maximum size of  oid , on return holds actual size of  oid

       unsigned int * critical
                   output variable with critical flag, may be NULL.


       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.


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